Saturday, November 30, 2019

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1104

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1104



P0141



* Before the ECM can report DTC P0135 and P0141 failed, DTCs P0036, P0037, and P0038 must run and pass.



* DTCs P0137, P0138, or P0140 are not set.



* The engine is operating.



* The ignition voltage is 10-18 volts.



* The intake air temperature (IAT) is greater than -30掳C (-22掳F).



* After the previous ignition cycle the engine OFF time was greater than 0 seconds.



* The calculated exhaust temperature is 360-500掳C (680-932掳F).



* The engine is not in decel fuel cut-off (DFCO).



* The internal HO2S 2 resistance is less than 10,000 ohm.



* The HO2S 2 heater is enabled for greater than 120 seconds.



* DTCs P0135 and P0141 run continuously once the above conditions are met for approximately 100 seconds.



Conditions for Setting the DTC



The ECM detects that the internal resistance of an HO2S 1 or HO2S 2 heater is not within the expected range.



Action Taken When the DTC Sets



DTCs P0135 and P0141 are Type B DTCs.



Conditions for Clearing the MIL/DTC



DTCs P0135 and P0141 are Type B DTCs.



Reference Information



Schematic Reference



Engine Controls Schematics (LAU) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics



(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)



Connector End View Reference



Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)



Electrical Information Reference



* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit



Testing/Circuit Testing)



* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic



Procedures/Connector Repairs/Connector Repairs)



* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General



Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)



* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring



Repairs/Wiring Repairs)



DTC Type Reference



Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code



(DTC) Type Definitions)



Scan Tool Reference



Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information



Circuit/System Verification



Note: It may take up to 8 minutes for the DTC to set.



1. With the engine at normal operating temperature, operate the engine above 1,200 RPM for 2 minutes and then allow the engine to idle. DTCs



P0135 or P0141 should not set.



2. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the



conditions that you observed from the Freeze Frame/Failure Records data.



Circuit/System Testing



1. Ignition OFF, disconnect the harness connector at the appropriate B52 HO2S.



2. Ignition ON, test for B+ on the HO2S ignition circuit terminal 1 of the HO2S harness connector.



瀚慖f less than the specified value, repair the ignition voltage circuit of the HO2S heater for a short to ground or an open/high resistance.



3. Ignition OFF, connect a test lamp between the heater control circuit terminal 2 and B+. The test light should not illuminate.

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 84


Diagnostic Aids



* When a harness connector is disconnected, the high control and low control circuits are shorted together by the integral shorting bar. This



should be taken into account when testing for faults on these circuits.



* This DTC usually indicates a poor connection or a wiring malfunction between the SDM and the deployment loop.



Reference Information



Schematic Reference



SIR Schematics (See: Diagrams/Electrical Diagrams/Air Bag Systems)



Connector End View Reference



Component Connector End Views (See: Diagrams/Connector Views)



Description and Operation



SIR System Description and Operation (See: Restraints and Safety Systems/Air Bag Systems/Description and Operation)



Electrical Information Reference



* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit



Testing/Circuit Testing)



* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic



Procedures/Connector Repairs/Connector Repairs)



* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General



Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)



* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring



Repairs/Wiring Repairs)



Scan Tool Reference



Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information



Special Tools Required



J 38715-A Driver and Passenger SIR Load Tool



Circuit/System Verification



Note: Refer to SIR Service Precautions (See: Restraints and Safety Systems/Air Bag Systems/Service Precautions/Technician Safety Information)



Inspect all terminals for damage or corrosion when disconnecting connectors. Damage or corrosion in the following requires repair or replacement of



the affected component/connector.



* Seat belt pretensioner



* Passenger instrument panel airbag



* Side air bag



* Roof rail airbag



* SDM



* SDM wiring harness connector



Note: The connector and connector position assurance (CPA) may seat independent of each other. Both the connector and CPA should seat with an



audible and/or tactile click. The CPA isolates the shorting-bars within the connector allowing the deployment circuit to operate properly.



If the condition is intermittent or cannot be duplicated, disconnect the connectors and add Nyogel lubricant 760G. This procedure will correct the



high resistance condition due to terminal fretting corrosion.



Observe the scan tool Deployment Loop Resistance parameters while moving the harness near each connector listed below. The reading should stay



consistently between 1.7 and 4.2 ohm without any drop outs or spikes.



* Passenger instrument panel air bag



* Roof rail air bag



* Seat side air bag



* Seat belt pretensioner



* Any inline harness



* SDM



If the reading is erratic while moving the harness, perform the following;



* Inspect each connector terminal for damage or corrosion and repair as necessary.



* Apply Nyogel lubricant 760G to each connector terminal.



* Insure each connector and CPA is correctly seated.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1846

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1846



Diagnostic Aids



* A fuel system delivery condition causes this DTC to set. Thoroughly inspect all items that cause a lean condition. Refer to Fuel System



Diagnosis (LF1 China) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Pump/Testing and Inspection/Fuel System



Diagnosis (China))Fuel System Diagnosis (LF1 Except China) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel



Pump/Testing and Inspection/Fuel System Diagnosis (Except China))Fuel System Diagnosis (LAU China) (See: Powertrain



Management/Fuel Delivery and Air Induction/Fuel Pump/Testing and Inspection/Fuel System Diagnosis (China))Fuel System Diagnosis



(LAU Except China) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Pump/Testing and Inspection/Fuel System



Diagnosis (Except China)).



* Any un-metered air into the engine causes this DTC to set. Thoroughly inspect all areas of the engine for vacuum leaks.



* A MAF sensor condition can cause this DTC without setting a MAF DTC. If there is a MAF sensor condition, the MAF sensor parameters



will appear to be within range.



* Inspect the air filter for being the correct one for this application. Make sure that the engine oil fill cap is in place and that it is tight. Verify



that the engine oil dip stick is fully seated.



Reference Information



Schematic Reference



Engine Controls Schematics (LAU) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics



(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)



Connector End View Reference



Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)



Electrical Information Reference



* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit



Testing/Circuit Testing)



* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic



Procedures/Connector Repairs/Connector Repairs)



* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General



Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)



* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring



Repairs/Wiring Repairs)



DTC Type Reference



Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code



(DTC) Type Definitions)



Scan Tool Reference



Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information



Circuit/System Verification



1. Observe the DTC information with a scan tool. DTC P2177 or P2187 should not be set.



瀚慖f there are other DTCs set besides DTC P2177 or P2187 refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic



Trouble Code Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle) to diagnosis the applicable DTC.



2. Ignition ON, observe the BARO pressure parameter and compare the reading on the scan tool to the barometric pressure table. Refer to



Altitude Versus Barometric Pressure (See: Powertrain Management/Computers and Control Systems/Specifications/Altitude Versus



Barometric Pressure).



瀚慖f the BARO pressure is not within the range specified for your altitude, refer to DTC P2227, P2228, or P2229 (LAU) ( See: P Code



Charts/P2227).



3. Engine at normal operating temperature, observe the Average Total Fuel Trim parameter with a scan tool. The Average Total Fuel Trim



should be between -22 to +23 %.



瀚慖f not within the specified range, verify none of the following conditions exist:



* A mass air flow sensor signal that is skewed-If the Short Term Fuel Trim parameter changes greater than 20 % when the MAF sensor is



disconnected, refer to DTC P0101 (LAU) (See: P Code Charts/P0101)DTC P0101 (LF1) (See: P Code Charts/P0101).



* The air intake system after the MAF sensor for vacuum leaks



* Fuel contamination-Refer to Alcohol/Contaminants-in-Fuel Diagnosis (Special Tool) (See: Powertrain Management/Fuel Delivery and



Air Induction/Fuel/Testing and Inspection/Alcohol/Contaminants-in-Fuel Diagnosis (Special Tool))Alcohol/Contaminants-in-Fuel



Diagnosis (Without Special Tool) (See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Component



Tests and General Diagnostics/Alcohol/Contaminants-in-Fuel Diagnosis (Without Special Tool)) and Fuel System Cleaning (See:



Powertrain Management/Fuel Delivery and Air Induction/Service and Repair).

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1891

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1891



Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code



(DTC) Type Definitions)



Scan Tool Reference



Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information



Circuit/System Verification



1. Operate the engine for 30 seconds. Observe the DTC information with a scan tool. DTC P0351, P0352, P0353, P0354, P0355, P0356, P2300,



P2301, P2303, P2304, P2306, P2307, P2309, P2310, P2312, P2313, P2315, or P2316 should not set.



2. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the



conditions that you observed from the Freeze Frame/Failure Records data.



Circuit/System Testing



1. Ignition OFF, disconnect the harness connector at the appropriate T8 ignition coil.



2. Ignition OFF, all vehicle systems OFF, it may take up to 2 minutes for all the systems to power down, test for less than 5 ohm between the



ground circuit terminal A and ground.



瀚慖f greater than the specified range, repair the ground circuit for an open/high resistance.



3. Ignition OFF, test for less than 5 ohm between the low reference circuit terminal B and ground.



瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the ECM.



4. Ignition ON, verify that a test lamp illuminates between ignition voltage circuit terminal D and ground.



瀚慖f the test lamp does not illuminate, test the ignition voltage circuit for a short to ground or an open/high resistance. If the circuit tests



normal and the ignition voltage circuit fuse is open, test all the components connected to the ignition voltage circuit and replace as



necessary.



5. Engine running, observe the Ignition Coil 1-6 Control Circuit Low Voltage Test Status on the scan tool. Test Status should be Ok or Not



Run.



瀚慖f test status is Malfunction test for open or short to ground.



6. Engine running, observe the Ignition Coil 1-6 Control Circuit Open Test Status on the scan tool. Test Status should be Ok or Not Run.



瀚慖f test status is Malfunction test for open circuit.



7. Engine running, observe the Ignition Coil 1-6 Control Circuit High Voltage Test Status on the scan tool. Test Status should be Ok or Not



Run.



瀚慖f test status is Malfunction test for short to voltage.



8. If all circuits test normal, test or replace the appropriate T8 ignition coil.



Repair Instructions



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



* Ignition Coil Replacement - Bank 1 (See: Powertrain Management/Ignition System/Ignition Coil/Service and Repair/Ignition Coil



Replacement - Bank 1)



* Ignition Coil Replacement - Bank 2 (See: Powertrain Management/Ignition System/Ignition Coil/Service and Repair/Ignition Coil



Replacement - Bank 2)



* Control Module References (See: Testing and Inspection/Programming and Relearning) for engine control module replacement, setup, and



programming



P2309



DTC P0351-P0356, P2300, P2301, P2303, P2304, P2306, P2307, P2309, P2310, P2312, P2313, P2315, or P2316 (LAU)



Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1267

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1267



P0327, P0328, P0332, and P0333



* DTCs P0324, P0335, P0336, P0338, P0341, P0342, P0343, P0346, P0347, P0348, P0366, P0367, P0368, P0391, P0392, P0393 are not set.



* The engine speed is greater than 1,960 RPM.



* The ECM is controlling spark.



* The increase in engine speed is less than a range of 1,400-3,700 RPM per second.



* The engine load is in the range of 35-65 kPa per second.



* DTCs P0327, P0328, P0332, and P0332 run continuously once the above conditions are met for approximately 20 s.



Conditions for Setting the DTC



P0326 and P0331



The ECM detects a knock sensor signal voltage that is not in the range of a predetermined engine noise level in 25 of 250 test samples. The



condition exists for greater than 1 s or for a cumulative of 10 s.



P0327 or P0332



The ECM detects a knock sensor signal voltage that is less than the predetermined minimum engine noise level for greater than 1 s or for a



cumulative of 10 s.



P0328 or P0333



The ECM detects the knock sensor signal voltage is greater than predetermined maximum engine noise level for greater than 1 s or for a cumulative



of 10 s.



Action Taken When the DTC Sets



DTCs P0326, P0327, P0328, P0331, P0332, and P0333 are Type B DTCs.



Conditions for Clearing the DTC



DTCs P0326, P0327, P0328, P0331, P0332, and P0333 are Type B DTCs.



Diagnostic Aids



* Inspect the knock sensor for physical damage. A knock sensor that is dropped or damaged may cause a DTC to set.



* Inspect the knock sensor for proper installation. A knock sensor that is loose or over torqued may cause a DTC to set. The knock sensor



should be free of thread sealant. The knock sensor mounting surface should be free of burrs, casting flash, and foreign material.



* The knock sensor must be clear of hoses, brackets, and engine electrical wiring.



* With the knock sensor disconnected, the normal voltage measured from the knock sensor signal or the low reference circuit to ground is



between 2.30-2.80 V.



Reference Information



Schematic Reference



Engine Controls Schematics (LAU) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics



(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)



Connector End View Reference



Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)



Description and Operation



Knock Sensor System Description (See: Powertrain Management/Computers and Control Systems/Knock Sensor/Description and Operation)



Electrical Information Reference



* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit



Testing/Circuit Testing)



* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic



Procedures/Connector Repairs/Connector Repairs)



* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General



Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)



* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring



Repairs/Wiring Repairs)



DTC Type Reference



Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code



(DTC) Type Definitions)

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 70


Circuit/System Description



During a side or frontal crash of sufficient force the inflatable restraint sensing and diagnostic module (SDM) will allow current to flow through the



deployment loop in order to deploy the air bag module. There are 2 shorting bars used within the module connector which will short together both



high and low circuits, when the connector is disconnected. This will prevent unwanted deployment of the inflator module during servicing.



Conditions for Running the DTC



Ignition voltage is between 9-16 V.



Conditions for Setting the DTC



B0014 01, B0015 01, B0016 01, B0019 01, B0020 01, B0021 01, B0022 01, B0023 01



The air bag or seat belt retractor pretensioner high and/or low control circuit is shorted to voltage for 120 milliseconds.



B0014 02, B0015 02, B0016 02, B0019 02, B0020 02, B0021 02, B0022 02, B0023 02



The air bag or seat belt retractor pretensioner high and/or low control circuit is shorted to ground for 120 milliseconds.



B0014 04, B0015 04, B0016 04, B0019 04, B0020 04, B0021 04, B0022 04, B0023 04



The air bag or seat belt retractor pretensioner high and/or low control circuit is open for 120 milliseconds.



B0014 0D, B0015 0D, B0016 0D, B0019 0D, B0020 0D, B0021 0D, B0022 0D, B0023 0D



The air bag or seat belt retractor pretensioner deployment loop resistance is greater than 3.9 ohms for 120 milliseconds.



B0014 0E, B0015 0E, B0016 0E, B0019 0E, B0020 0E, B0021 0E, B0022 0E, B0023 0E



The air bag or seat belt retractor pretensioner deployment loop resistance is less than 1.1 ohm for 120 milliseconds.



Action Taken When the DTC Sets



* The SDM requests the instrument panel cluster (IPC) to illuminate the AIR BAG indicator.



* The SDM will store a DTC, however if an event occurs the system will still attempt deployments.



Conditions for Clearing the DTC



* The condition for setting the DTC no longer exists.



* A history DTC will clear once 100 fault-free ignition cycles have occurred.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Technical Service Bulletin # 07-02-32-002M Date: 120327

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Technical Service Bulletin # 07-02-32-002M Date: 120327



Steering - Power Steering Leaking Fluid



INFORMATION



Bulletin No.: 07-02-32-002M



Date: March 27, 2012



Subject: -Hydraulic Power Steering System Leak Required Diagnostic Actions



Models:



2005-2013 GM Passenger Cars and Trucks



Equipped with Hydraulic Steering



Supercede:



This bulletin is being revised to update the model years. Please discard Corporate Bulletin Number 07-02-32-002L (Section 02 - Steering).



Condition



Some customers may comment on a fluid leak under the front of the vehicle. Upon further investigation, the technician may find fluid leaking from



the power steering system. Please use the following information to assist in diagnosis.



Diagnostic Information



Important



All potential leaks should be completely cleaned and identified before attempting to repair or replace any power steering components.



1. Start diagnosis by inspecting the fluid level in the power steering reservoir. If the fluid level is NOT low, a careful analysis of the condition is



necessary as it may involve a different type of fluid leak.



2. Visually inspect the components where the fluid has accumulated.



3. Before the component is replaced, inspect fittings and connections for proper torque.



4. Clean the area around connections, joints and seals with engine degreaser.



5. Add fluorescent dye (such as Kent Moore GE 28431-6) to the power steering fluid.



6. Start the vehicle and allow the power steering system to reach normal operating temperatures.



7. Turn the steering wheel to the stops in each direction while bumping the steering wheel against the stops 3-4 times. This will build maximum



steering system pressure and help identify the source of the leak if present.



Caution



DO NOT hold the steering wheel against the stops as this will damage the power steering pump.



8. Determine the source of the leak.



2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 63



9. When returning the part to the Warranty Parts Center (WPC), mark the component with the location of the leak using a paint marker, paint or



tape to highlight the location of the leak.



10. If a repeatable leak is found, refer to the following tables to determine the proper corrective action needed.



Repairable Leaks



*Steering Line Fitting Seals



Some vehicles are equipped with a "duck-bill" style seal that is pierced by the power steering line during installation to the gear at vehicle



assembly. Vehicles that are equipped with this type seal are:



- 2010-2013 Buick LaCrosse



- 2011-2013 Buick Regal



- 2007-2013 Cadillac Escalade



- 2005-2013 Chevrolet Malibu



- 2007-2013 Chevrolet Avalanche, Silverado, Suburban, Tahoe



- 2007-2013 GMC Sierra, Yukon, Yukon XL, Yukon Denali, Yukon Denali XL



- 2006-2010 Pontiac G6



- 2007-2009 Saturn AURA



These seals are replaceable and any leak at the line to gear connection on these vehicles should be first addressed with a seal replacement. Use a



2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 64



J-44586 Power Steering Gear Oil Seal Remover/Installer (2) to replace the seals (1).



Non-Repairable Leaks



*If fluid is observed at the adjuster plug during the initial visual inspection, then refer to the following:



- Seepage at the adjuster plug may not necessarily indicate an active leak. Power steering fluid is used during the manufacturing of the



gear/rack. The fluid used at assembly is pushed into the pinion area during assembly. The adjuster plug and the area below the pinion are not



positively sealed. Fluid trapped in this area during assembly may seep from the adjuster plug. The rack should not be replaced for this



condition.



- You can distinguish seepage from an active leak by removing the left tie rod boot clamp and inspecting for the presence of fluid at the inner



tie rod.



- If no fluid is found in the left tie rod boot, replace the boot clamp and clean the seepage from the rack. No further action is needed.



- If fluid is found in the left tie rod boot, replace the gear assembly.



Warranty Information



For vehicles repaired under warranty please refer to the Labor Time Guide and claim the applicable Labor Operation for the repaired or replaced



component. Failure to return the replaced part with the location of the leak clearly marked or if there is no evidence of dye being used to identify



the source of the leak may result in a debit of the entire warranty claim.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Technical Service Bulletin # 00-03-10-002G Date: 130304

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Technical Service Bulletin # 00-03-10-002G Date: 130304



Wheels - Chromed Aluminum Wheel Staining/Pitting/Corrosion



INFORMATION



Bulletin No.: 00-03-10-002G



Date: March 04, 2013



Subject: Chemical Staining, Pitting, Corrosion and/or Spotted Appearance of Chromed Aluminum Wheels



Models:



2013 and Prior GM Passenger Cars and Trucks



Supercede:



This bulletin is being revised to add the 2013 model year and update the Parts Information. Please discard Corporate Bulletin Number



00-03-10-002F (Section 03 - Suspension).



Important



You may give a copy of this bulletin to the customer.



What is Chemical Staining of Chrome Wheels



Figure 1



Chemical staining in most cases results from acid based cleaners (refer to Figure 1 for an example). These stains are frequently milky, black, or



greenish in appearance. They result from using cleaning solutions that contain acids on chrome wheels. Soap and water is usually sufficient to clean



wheels.



If the customer insists on using a wheel cleaner they should only use one that specifically states that it is safe for chromed wheels and does not



contain anything in the following list. (Dealers should also survey any products they use during prep or normal cleaning of stock units for these



chemicals.)



- Ammonium Bifluoride (fluoride source for dissolution of chrome)



- Hydrofluoric Acid (directly dissolves chrome)



- Hydrochloric Acid (directly dissolves chrome)



- Sodium Dodecylbenzenesulfonic Acid



- Sulfamic Acid



- Phosphoric Acid



- Hydroxyacetic Acid



Notice



Many wheel cleaner instructions advise to take care to avoid contact with painted surfaces. Most customers think of painted surfaces as the fenders,



quarter panels and other exterior sheet metal. Many vehicles have painted brake calipers. Acidic wheel cleaners may craze, crack, or discolor the



paint on the brake calipers. Damage from wheel cleaners is not covered under the vehicle new car warranty. Soap and water applied with a soft



brush is usually all that is required to clean the calipers.



2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 300



Whenever any wheel cleaner is used, it must be THOROUGHLY rinsed off of the wheel with clean, clear water. Special care must be taken to rinse



under the hub cap, balance weights, wheel nuts, lug nut caps, between the wheel cladding and off the back side of the wheel. Wheels returned to the



Warranty Parts Center (WPC) that exhibit damage from wheel cleaners most often have the damage around and under the wheel weight where the



cleaner was incompletely flushed away.



Notice



Do not use cleaning solutions that contain hydrofluoric, oxalic and most other acids on chrome wheels (or any wheels).



If the customer is unsure of the chemical make-up of a particular wheel cleaner, it should be avoided.



For wheels showing signs of milky staining from acidic cleaners, refer to Customer Assistance and Instructions below.



Warranty of Stained Chrome Wheels



Stained wheels are not warrantable. Most acid based cleaners will permanently stain chrome wheels. Follow-up with dealers has confirmed that



such cleaners were used on wheels that were returned to the Warranty Parts Center (WPC). Any stained wheels received by the WPC will be



charged back to the dealership. To assist the customer, refer to Customer Assistance and Instructions below.



Pitting or Spotted Appearance of Chrome Wheels



Figure 2



A second type or staining or finish disturbance may result from road chemicals, such as calcium chloride used for dust control of unpaved roads.



The staining will look like small pitting (refer to Figure 2). This staining will usually be on the leading edges of each wheel spoke, but may be



uniformly distributed. If a vehicle must be operated under such conditions, the chrome wheels should be washed with mild soap and water and



thoroughly rinsed as soon as conveniently possible.



Important



Road chemicals, such as calcium chloride used for dust control of unpaved roads, can also stain chrome wheels. The staining will look like



small pitting. This staining will usually be on the leading edges of each wheel spoke. This is explained by the vehicle traveling in the



forward direction while being splashed by the road chemical. If a vehicle must be operated under such conditions, the chrome wheels



should be washed with mild soap and water and thoroughly rinsed as soon as conveniently possible.



Warranty of Pitted or Spotted Chrome Wheels



Wheels returned with pitting or spotting as a result of road chemicals may be replaced one time. Damage resulting from contact with these applied



road chemicals is corrosive to the wheels finish and may cause damage if the wheels are not kept clean.



Important



Notify the customer that this is a one time replacement. Please stress to the customer the vital importance of keeping the wheels clean if



they are operating the vehicle in an area that applies calcium chloride or other dust controlling chemicals! "GM of Canada" dealers



require prior approval by the District Manager - Customer Care and Service Process (DM-CCSP).



"Stardust" Corrosion of Chrome Wheels



Figure 3



2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 301



A third type of finish disturbance results from prolonged exposure to brake dust and resultant penetration of brake dust through the chrome. As



brakes are applied hot particles of brake material are thrown off and tend to be forced through the leading edge of the wheel spoke windows by



airflow. These hot particles embed themselves in the chrome layer and create a small pit. If the material is allowed to sit on the wheel while it is



exposed to moisture or salt, it will corrode the wheel beneath the chrome leaving a pit or small blister in the chrome.



Heavy brake dust build-up should be removed from wheels by using GM Chrome Cleaner and Polish, P/N 1050173 (in Canada use 10953013). For



moderate cleaning, light brake dust build-up or water spots use SmartPolish, P/N 88865218 (in Canada, use 2675213). After cleaning, the wheel



should be waxed using SmartWax, P/N 88865229 (in Canada, use 2675208), which will help protect the wheel from brake dust and reduce



adhesion of any brake dust that gets on the wheel surface. For general maintenance cleaning, PEEK Metal Polish+ may be used. It will clean and



shine the chrome and leave behind a wax coating that may help protect the finish.



Warranty of Stardust Corroded Chrome Wheels



Wheels returned with pitting or spotting as a result of neglect and brake dust build-up may be replaced one time.



Important



Notify the customer that this is a one time replacement. Please stress to the customer the vital importance of keeping the wheels clean and



free of prolonged exposure to brake dust build-up. "GM of Canada" dealers require prior approval by the District Manager - Customer



Care and Service Process (DM-CCSP).



Customer Assistance and Instructions



GM has looked for ways customers may improve the appearance of wheels damaged by acidic cleaners. The following product and procedure has



been found to dramatically improve the appearance of stained wheels. For wheels that have milky stains caused by acidic cleaners try the following:



Notice



THE 3M CHROME AND METAL POLISH REQUIRED FOR THIS PROCEDURE IS AN EXTREMELY AGGRESSIVE POLISH/CLEANER.



THE WHEELS MUST BE CLEANED BEFORE APPLICATION TO AVOID SCRATCHING THE WHEEL SURFACE. THIS PRODUCT



WILL REDUCE THE THICKNESS OF THE CHROME PLATING ON THE WHEEL AND IF USED INCORRECTLY OR EXCESSIVELY



MAY REMOVE THE CHROME PLATING ALL TOGETHER, EXPOSING A LESS BRIGHT AND BRASSY COLORED SUB-LAYER.



FOLLOW INSTRUCTIONS EXACTLY.



1. Wash the wheels with vigorously with soap and water. This step will clean and may reduce wheel staining. Flood all areas of the wheel with



water to rinse.



2. Dry the wheels completely.



Notice



Begin with a small section of the wheel and with light pressure buff off polish and examine results. ONLY apply and rub with sufficient



force and time to remove enough staining that you are satisfied with the results. Some wheels may be stained to the extent that you may only



achieve a 50% improvement while others may be able to be restored to the original lustre. IN ALL CASES, only apply until the results are



satisfactory.



3. Apply 3M Chrome and Metal Polish #39527* with a clean terry cloth towel. As you apply the polish, the staining will be diminished.



4. When dry, buff off the polish with a clean portion of the towel.



5. Repeat application of the 3M Chrome and Metal Polish until satisfied with the results. If continued applications fail to improve the



appearance further discontinue use.



This procedure will improve the appearance of the wheels and may, with repeated applications, restore the finish dramatically. For wheels that



exhibit spotting from road chemicals the above procedure may marginally improve the condition but will not restore the finish or remove the



pitting. In this type of staining the wheel finish has actually been removed in spots and no manner of cleaning will restore the finish.



*We believe this source and their products to be reliable. There may be additional manufacturers of such products/materials. General Motors does



not endorse, indicate any preference for or assume any responsibility for the products or material from this firm or for any such items that may be



available from other sources.



2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 302



Parts Information



*This product is currently available from 3M. To obtain information for your local retail location please call 3M at 1-888-364-3577.



*This product is currently available from Tri-Peek International. To obtain information for your local retail location please call Tri-Peek at



1-877-615-4272 or at www.tripeek.com.

Friday, November 29, 2019

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 596


Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions) provides an overview of each diagnostic category.



DTC Descriptor



DTC B2625 00



- Display Dimming Pulse Width Modulation (PWM) Output Circuit



Diagnostic Fault Information



Circuit/System Description



When the interior lamps dimming switch is activated, a variable voltage signal is applied through the instrument panel lamps dimmer switch signal



circuit to the body control module (BCM). The BCM then applies a variable voltage signal through the LED indicator dimming supply circuit to the



components on the circuit.



Conditions for Running the DTC

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1188

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1188



DTCs P0244, P0245, P0246 are Type B DTCs.



Conditions for Clearing the MIL/DTCs



DTCs P0244, P0245, P0246 are Type B DTCs.



Reference Information



Schematic Reference



Engine Controls Schematics (LAU) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics



(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)



Connector End View Reference



Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)



Description and Operation



Turbocharger System Description (See: Powertrain Management/Fuel Delivery and Air Induction/Turbocharger/Description and Operation)



Electrical Information Reference



* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit



Testing/Circuit Testing)



* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic



Procedures/Connector Repairs/Connector Repairs)



* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General



Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)



* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring



Repairs/Wiring Repairs)



DTC Type Reference



Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code



(DTC) Type Definitions)



Scan Tool Reference



Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information



Circuit/System Verification



1. Engine running, command the Turbocharger Wastegate Solenoid Valve to 20% with a scan tool while observing the following control circuit



status parameters:



* Turbocharger Wastegate Solenoid Valve Control Circuit High Voltage Test Status



* Turbocharger Wastegate Solenoid Valve Control Circuit Open Test Status



* Turbocharger Wastegate Solenoid Valve Control Circuit Low Voltage Test Status



Each parameter should display OK.



2. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the



conditions that you observed from the Freeze Frame/Failure Records data.



Circuit/System Testing



1. Inspect the turbocharger and the wastegate solenoid valve for damage. Refer to Turbocharger Cleaning and Inspection (See: Engine,



Cooling and Exhaust/Engine/Service and Repair/Overhaul/102. Turbocharger Cleaning and Inspection)



2. Ignition OFF, disconnect the harness connector at the Q42 turbocharger wastegate solenoid valve.



3. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 1 and ground.



瀚慖f the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. If the circuit tests normal and



the ignition circuit fuse is open, test all components connected to the ignition circuit and replace as necessary.



4. Connect a test lamp between the control circuit terminal 2 and the ignition circuit terminal 1.



5. Command the Turbocharger Wastegate Solenoid Valve to 50% with a scan tool. The test lamp should illuminate when commanded to 50%



and turn OFF when commanded to 0%.



瀚慖f the test lamp is always ON, test the control circuit terminal 2 for a short to ground. If the circuit tests normal, replace the K20 ECM.



瀚慖f the test lamp is always OFF, test the control circuit terminal 2 for a short to voltage or an open/high resistance. If the circuit tests



normal, replace the K20 ECM.



6. Test for 2.6-4.6 V between the control circuit terminal 2 and ground.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1436

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1436



* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring



Repairs/Wiring Repairs)



Scan Tool Reference



Control Module References (See: Testing and Inspection/Programming and Relearning)for scan tool information



Circuit/System Testing



1. Ignition OFF, disconnect the X1 (LF1) or X2 (LAU) harness connector at the K20 ECM.



2. Connect a test lamp between the appropriate signal circuit terminal listed below and ground.



* Terminal 57 (LF1)



* Terminal 52 (LAU)



3. Ignition ON, verify the test lamp turns ON and OFF when pressing and releasing the brake pedal.



瀚慖f the test lamp is always ON, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.



瀚慖f the test lamp is always OFF, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace



the K9 BCM.



4. If all circuits test normal, replace the K20 ECM.



Repair Instructions



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



Control Module References (See: Testing and Inspection/Programming and Relearning)for BCM or ECM, replacement, setup, and programming



P0575



DTC P0575



Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions) provides an overview of each diagnostic category.



DTC Descriptor



DTC P0575



- Cruise Control Switch Signal Circuit



Circuit/System Description



When a cruise control function switch is activated, the body control module (BCM) detects a predetermined voltage. The BCM sends a serial data



message to the engine control module (ECM) indicating the function that has been requested.



Conditions for Running the DTC



The ignition is ON.



Conditions for Setting the DTC



* The ECM receives an invalid cruise control switch status serial data message from the BCM.



* This diagnostic runs continuously.



Actions Taken When the DTC Sets



DTC P0575 is a type C DTC.



Conditions for Clearing the DTC



DTC P0575 is a type C DTC.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1086

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1086



Circuit/System Testing



1. Ignition OFF, disconnect the harness connector at Q38 throttle body.



2. Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down. Test for less than 5 ohm



between the low reference circuit terminal C and ground.



瀚慖f greater than the specified range, test the low reference circuit for a short to voltage or an open/high resistance. If the circuit tests



normal, replace the K20 engine control module.



3. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal E and ground.



瀚慖f less than the specified range, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20



engine control module.



瀚慖f greater than the specified range, test the circuit for a short to voltage. If the circuit tests normal, replace the K20 engine control module.



4. Ignition ON, verify that the scan tool Throttle Position Sensor 1 Voltage parameter is less than 0.3 V.



瀚慖f greater than the specified value, test the signal circuit terminal D for a short to voltage. If the circuit tests normal, replace the K20



engine control module.



5. Connect a 3 A fused jumper wire between the 5 V reference circuit terminal E and the throttle position sensor 1 signal circuit terminal D.



Verify the scan tool Throttle Position Sensor 1 Voltage parameter is greater than 4.89 V.



瀚慖f less than the specified value, test the signal circuit for an open/high resistance or for a short to ground. If the circuit tests normal,



replace the K20 engine control module.



6. Verify the scan tool Throttle Position Sensor 2 Voltage parameter is greater than 4.97 V.



瀚慖f less than the specified value, test the signal circuit terminal F for a short to ground. If the circuit tests normal, replace the K20 engine



control module.



Note: If the fuse in the jumper wire opens, the signal circuit is shorted to a voltage.



7. Connect a 3 A fused jumper wire between the throttle position sensor 2 signal circuit terminal F and the low reference circuit terminal C.



Verify the scan tool Throttle Position Sensor 2 Voltage parameter is less than 0.10 V.



瀚慖f greater than the specified value, test the signal circuit for an open/high resistance or for a short to voltage. If the circuit tests normal,



replace the K20 engine control module.



8. If all circuits test normal, replace the Q38 throttle body assembly.



Repair Instructions



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



* Throttle Body Assembly Replacement (LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Throttle Body/Service and



Repair/Removal and Replacement)Throttle Body Assembly Replacement (LAU) (See: Powertrain Management/Fuel Delivery and Air



Induction/Throttle Body/Service and Repair/Removal and Replacement)



* Control Module References (See: Testing and Inspection/Programming and Relearning) for engine control module replacement,



programming, and setup



P0128



DTC P0128 (LAU)



Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions) provides an overview of each diagnostic category.



DTC Descriptor



DTC P0128



- Engine Coolant Temperature (ECT) Below Thermostat Regulating Temperature

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 155


DTC B0091 00



- Front End Sensor 3 No Additional Information (Center)



DTC B0091 01



- Front End Sensor 3 Short to Battery (Center)



DTC B0091 02



- Front End Sensor 3 Short to Ground (Center)



DTC B0091 05



- Front End Sensor 3 Short to Battery or Open (Center)



DTC B0091 0F



- Front End Sensor 3 Erratic (Center)



DTC B0091 39



- Front End Sensor 3 Internal Electronic Failure (Center)



DTC B0091 3A



- Front End Sensor 3 Incorrect Component Installed (Center)



DTC B0091 71



- Front End Sensor 3 Invalid Serial Data Received (Center)



Circuit/System Description



The inflatable restraint front end sensor utilizes a unidirectional 2-wire circuit. The front end sensor modulates current on the interface to send ID,



state of health, and deployment commands to the inflatable restraint sensing and diagnostic module (SDM). The SDM serves as a power source and



a ground for the front end sensor. When the ignition is turned ON and input power from the SDM is first detected, the front end sensor responds by



performing internal diagnostics and sending an ID to the SDM. The SDM considers the ID to be valid if the response time is less than 5 seconds.



The front end sensor continually communicates status messages to the SDM, which determines if a fault is present in the front end sensor circuit.



When a fault is detected, the SDM may reset the front end sensor up to 2 times by removing and reapplying power to it. If the fault is still present,



the SDM will set a DTC.



Conditions for Running the DTC



Ignition voltage is between 9-16 volts.



Conditions for Setting the DTC



B0091 00



* The front end sensor has been shorted to voltage, open, or shorted to ground.



* The front end sensor current has been above 23 mA for longer than 5 milliseconds.



* The SDM has not received a message from the front end sensor for more than 375 milliseconds.



B0091 01



* The front end sensor has been shorted to voltage.



* The front end sensor current has been above 23 mA for longer than 5 milliseconds.



* The SDM has not received a message from the front end sensor for more than 375 milliseconds.



B0091 02



* The front end sensor has been shorted to ground.



* The front end sensor current has been above 23 mA for longer than 5 milliseconds.



* The SDM has not received a message from the front end sensor for more than 375 milliseconds.



B0091 05



* The front end sensor has been shorted to voltage.



* The front end sensor circuit is open.



* The front end sensor current has been above 23 mA for longer than 5 milliseconds.



* The SDM has not received a message from the front end sensor for more than 375 milliseconds.



B0091 0F



The SDM has received erratic messages from the front end sensor.



B0091 39



* The SDM has received a NOK message from the front end sensor.



* The SDM has not received a message.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1519

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1519



Circuit/System Verification



1. Ignition ON, verify with a scan tool the High Side Driver 1 parameter displays Enabled.



2. Engine Running, gear selector lever in Park position. Verify with a scan tool the following test status parameters displays OK:



* High Side Driver. 1 Ckt. Low Voltage Test Status



* High Side Driver. 1 Ckt. Open Test Status



* High Side Driver. 1 Ckt. High Voltage Test Status



3. Operate the vehicle within the Conditions for Running and Setting the DTC. The DTCs should not set. You may also operate the vehicle



within the conditions that you observed from the Freeze Frame/Failure Records data.



Circuit/System Testing



Note: You must perform the Circuit/System Verification first.



1. Ignition OFF, remove the control solenoid valve assembly. Refer to Control Solenoid Valve and Transmission Control Module Assembly



Replacement (See: Powertrain Management/Transmission Control Systems/Actuators and Solenoids - Transmission and



Drivetrain/Actuators and Solenoids - A/T/Shift Solenoid/Service and Repair).



2. Perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection (See: Transmission and Drivetrain/Automatic



Transmission/Transaxle/Testing and Inspection/Component Tests and General Diagnostics/6T70/6T75 - Automatic Transmission/Control



Solenoid Valve and Transmission Control Module Assembly Inspection).



3. Place the control solenoid valve assembly on a clean work surface near the transmission assembly.



4. Connect DT-47825-20 - adapter harness between the vehicle wire harness electrical connector, and the control solenoid valve assembly



electrical connector.



5. Ignition ON, verify with a scan tool the following test status parameters display OK:



* High Side Driver. 1 Ckt. Low Voltage Test Status



* High Side Driver. 1 Ckt. Open Test Status



* High Side Driver. 1 Ckt. High Voltage Test Status



瀚慖f any test status parameter displays Fault or Malfunction, replace the control solenoid valve assembly.



Repair Instructions



Note:



* Perform the Service Fast Learn Adapts (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and



Inspection/Programming and Relearning) following all transmission related repairs.



* Before replacing the TCM, perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection (See: Transmission



and Drivetrain/Automatic Transmission/Transaxle/Testing and Inspection/Component Tests and General Diagnostics/6T70/6T75 - Automatic



Transmission/Control Solenoid Valve and Transmission Control Module Assembly Inspection).



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



Control Module References (See: Testing and Inspection/Programming and Relearning) for control solenoid valve assembly replacement, setup,



and programming



P0659



DTC P0658 or P0659



Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions) provides an overview of each diagnostic category.



DTC Descriptors



DTC P0658



- Solenoid High Control Circuit Group 1 Low Voltage



DTC P0659



- Solenoid High Control Circuit Group 1 High Voltage

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1392

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1392



2. Test for infinite resistance between each terminal of the EVAP vent solenoid valve and the EVAP vent solenoid valve housing.



瀚慖f not the specified value, replace the Q13 EVAP vent solenoid valve.



Repair Instructions



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



* Evaporative Emission Canister Vent Solenoid Valve Replacement (NT7, NU5) (See: Powertrain Management/Emission Control



Systems/Evaporative Emissions System/Evaporative Emission Control Canister/Canister Vent Valve/Service and Repair)



* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming



P0499



DTC P0449, P0498, or P0499 (LAU)



Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions) provides an overview of each diagnostic category.



DTC Descriptors



DTC P0449



- Evaporative Emission (EVAP) Vent Solenoid Control Circuit



DTC P0498



- Evaporative Emission (EVAP) Vent Solenoid Valve Control Circuit Low Voltage



DTC P0499



- Evaporative Emission (EVAP) Vent Solenoid Valve Control Circuit High Voltage



Diagnostic Fault Information



Circuit/System Description



The evaporative emission (EVAP) canister vent valve is used for EVAP system diagnostics. The EVAP canister vent valve is a normally open



valve. Battery positive voltage is supplied directly to the EVAP canister vent valve. The engine control module (ECM) controls the solenoid by



grounding the control circuit with a solid state device called a driver. The driver is equipped with a feedback circuit that is pulled-up to a voltage.



The ECM can determine if the control circuit is open, shorted to ground, or shorted to a voltage by monitoring the feedback voltage. If the ECM



detects the control circuit voltage is within a predetermined range when the circuit is commanded OFF, this DTC sets.



Conditions for Running the DTC



* The engine speed is greater than 80 RPM.



* The ignition voltage is between 10-18 volts.



* The ECM has commanded the EVAP canister vent valve ON and OFF at least once during the ignition cycle.



* The DTCs runs continuously once the above conditions are met.



Conditions for Setting the DTC



P0449



The ECM detects the voltage on the EVAP canister vent valve control circuit is between 2.6-4.6 volts when the driver is commanded OFF. The



condition exists for less than 4 seconds or for a cumulative of 30 seconds.

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2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 595


The BCM, driver door switch, and passenger door switch cease attempts to illuminate the courtesy lamps.



Conditions for Clearing the DTC



* The conditions for setting the DTC are no longer present.



* A history DTC clears after 100 malfunction-free ignition cycles.



* The BCM receives the clear code command from the scan tool.



Reference Information



Schematic Reference



Interior Lights Schematics (See: Diagrams/Electrical Diagrams/Lighting and Horns/System Diagram/Interior Lights Schematics)



Connector End View Reference



Component Connector End Views (See: Diagrams/Connector Views)



Description and Operation



Interior Lighting Systems Description and Operation (See: Lighting and Horns/Description and Operation/Interior Lighting Systems Description



and Operation)



Electrical Information Reference



* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit



Testing/Circuit Testing)



* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic



Procedures/Connector Repairs/Connector Repairs)



* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General



Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)



* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring



Repairs/Wiring Repairs)



Scan Tool Reference



Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information



Circuit/System Testing



Note: Each courtesy lighting component may need to be disconnected to isolate a short to voltage or short to ground. Use the schematic to identify



the following:



* Courtesy Lighting components the vehicle is equipped with.



* Component locations on the courtesy lighting control circuit



* Each component's control and ground circuit terminals



1. Ignition OFF, disconnect the harness connector at any component with inoperative courtesy lighting.



2. Ignition OFF, scan tool disconnected, interior lamps OFF, doors CLOSED, test for less than 5 ohm between the ground circuit and ground.



锟斤拷 If greater than the specified value, test the ground circuit for an open/high resistance.



3. Connect a test lamp between the control circuit and ground.



4. Command the Courtesy Lamp control ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the



commanded states.



锟斤拷 If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace



the BCM.



锟斤拷 If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the BCM.



5. If all circuits test normal, replace the component with the inoperative courtesy lighting.



Repair Instructions



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



* Refer to the appropriate replacement procedure for the component causing the condition.



* Control Module References (See: Testing and Inspection/Programming and Relearning) for BCM replacement, setup, and programming

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1299

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1299



- Intake Camshaft Position Sensor Performance Bank 2



DTC P0347



- Intake Camshaft Position Sensor Circuit Low Voltage Bank 2



DTC P0348



- Intake Camshaft Position Sensor Circuit High Voltage Bank 2



DTC P0366



- Exhaust Camshaft Position Sensor Performance Bank 1



DTC P0367



- Exhaust Camshaft Position Sensor Circuit Low Voltage Bank 1



DTC P0368



- Exhaust Camshaft Position Sensor Circuit High Voltage Bank 1



DTC P0391



- Exhaust Camshaft Position Sensor Performance Bank 2



DTC P0392



- Exhaust Camshaft Position Sensor Circuit Low Voltage Bank 2



DTC P0393



- Exhaust Camshaft Position Sensor Circuit High Voltage Bank 2



Diagnostic Fault Information



Circuit/System Description



Each camshaft is equipped with a camshaft position sensor that the engine control module (ECM) monitors. The camshaft position sensor is a hall



effect switch that works in conjunction with a 4X reluctor wheel. The reluctor wheels are mounted to the camshaft position actuators that are



mounted to the end of the camshafts. The ECM uses the camshaft position sensor signals in order to determine the position of the camshafts.



The ECM uses the cylinder 1 intake camshaft position sensor to determine injector and ignition system synchronization. Also, the cylinder 1 intake



camshaft position sensor is used to determine camshaft to crankshaft relationship.



The ECM supplies 5 volts to the camshaft position sensors on the 5-volt reference circuits, and supplies a ground on the low reference circuits. The



camshaft position sensors provide a signal to the ECM on the signal circuits. If the ECM detects extra or missing camshaft position sensor signal



transitions, or a signal voltage that is more or less than the predetermined range, within a certain number of crankshaft revolutions, one of these



DTCs sets.



Conditions for Running the DTC



* The ECM detects greater than 10 crankshaft revolutions.



* The engine speed is less than 2,520 RPM.



* The DTCs run continuously once the above condition is met.



Conditions for Setting the DTC



P0341, P0346, P0366, P0391



* The ECM detects a signal from the camshaft position sensor, but the number of pulses are less than or greater than what is expected for one



crankshaft revolution.

Thursday, November 28, 2019

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1888

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1888



Circuit/System Testing



1. Ignition OFF, disconnect the harness connector at the appropriate T8 ignition coil.



2. Ignition OFF, all vehicle systems OFF, it may take up to 2 minutes for all the systems to power down, test for less than 5 ohm between the



ground circuit terminal A and ground.



瀚慖f greater than the specified range, repair the ground circuit for an open/high resistance.



3. Ignition OFF, test for less than 5 ohm between the low reference circuit terminal B and ground.



瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the ECM.



4. Ignition ON, verify that a test lamp illuminates between ignition voltage circuit terminal D and ground.



瀚慖f the test lamp does not illuminate, test the ignition voltage circuit for a short to ground or an open/high resistance. If the circuit tests



normal and the ignition voltage circuit fuse is open, test all the components connected to the ignition voltage circuit and replace as



necessary.



5. Engine running, observe the Ignition Coil 1-6 Control Circuit Low Voltage Test Status on the scan tool. Test Status should be Ok or Not



Run.



瀚慖f test status is Malfunction test for open or short to ground.



6. Engine running, observe the Ignition Coil 1-6 Control Circuit Open Test Status on the scan tool. Test Status should be Ok or Not Run.



瀚慖f test status is Malfunction test for open circuit.



7. Engine running, observe the Ignition Coil 1-6 Control Circuit High Voltage Test Status on the scan tool. Test Status should be Ok or Not



Run.



瀚慖f test status is Malfunction test for short to voltage.



8. If all circuits test normal, test or replace the appropriate T8 ignition coil.



Repair Instructions



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



* Ignition Coil Replacement - Bank 1 (See: Powertrain Management/Ignition System/Ignition Coil/Service and Repair/Ignition Coil



Replacement - Bank 1)



* Ignition Coil Replacement - Bank 2 (See: Powertrain Management/Ignition System/Ignition Coil/Service and Repair/Ignition Coil



Replacement - Bank 2)



* Control Module References (See: Testing and Inspection/Programming and Relearning) for engine control module replacement, setup, and



programming



P2307



DTC P0351-P0356, P2300, P2301, P2303, P2304, P2306, P2307, P2309, P2310, P2312, P2313, P2315, or P2316 (LAU)



Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions) provides an overview of each diagnostic category.



DTC Descriptors



DTC P0351



- Ignition Coil 1 Control Circuit



DTC P0352



- Ignition Coil 2 Control Circuit



DTC P0353



- Ignition Coil 3 Control Circuit

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 636


Repair Instructions



Important: This vehicle may be equipped with the 2-Way Advanced Remote Start System. Vehicle equipped with the 2-Way Advanced



Remote Start System can be identified by an LCD screen on the keyless entry transmitter or a yellow label on the RCDLR. When servicing



the 2-Way Advanced Remote Start System, ensure that the correct parts are installed during replacement. Service parts for the 2-Way



Advanced Remote Start System can be found in the Accessory section of the parts manual.



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



Remote Control Door Lock Transmitter Programming (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Keyless



Entry/Keyless Entry Transmitter/Testing and Inspection)



B3112



DTC B3109, B3110, B3111, or B3112



Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions) provides an overview of each diagnostic category.



DTC Descriptors



DTC B3109 00



- Keyless Entry Transmitter 1 Low Battery



DTC B3110 00



- Keyless Entry Transmitter 2 Low Battery



DTC B3111 00



- Keyless Entry Transmitter 3 Low Battery



DTC B3112 00



- Keyless Entry Transmitter 4 Low Battery



Circuit/System Description



With each press of a keyless entry transmitter button, a message containing the current battery state of the transmitter is sent to the remote control



door lock receiver (RCDLR) along with the commanded keyless entry function.



Conditions for Running the DTC



A keyless transmitter button is pressed.



Conditions for Setting the DTC



The DTC sets after 3 consecutive low battery signals from the same programmed transmitter.



Action Taken When the DTC Sets



The keyless entry system is inoperative.



Conditions for Clearing the DTC



The DTC is cleared when a normal transmitter voltage signal is received from the programmed transmitter that set the DTC.



Diagnostic Aids



The keyless entry transmitter used in the 2-Way Advanced Remote Start System is unique to the system. When servicing or replacing a transmitter,



ensure that the correct transmitter is used. The correct transmitter part number can be found in the Accessory section of the parts catalog. Attempting



to replace a 2-Way Advanced Remote Start transmitter with a regular service part may result in a failure to program the transmitter.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Technical Service Bulletin # 06-08-44-012F Date: 130228

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Technical Service Bulletin # 06-08-44-012F Date: 130228



Navigation System - DVD Navigation Update Program



INFORMATION



Bulletin No.: 06-08-44-012F



Date: February 28, 2013



Subject: DVD Navigation Update Program, Navigation Disc Diagnostic Aid, AVN Software Update Discs and Ordering Information



Models:



2002-2013 GM Passenger Cars and Trucks



Attention:



Please direct this information to your Sales Consultants, Service Consultants, Parts Personnel and Used Car Department. This bulletin ONLY



applies to North American dealers/retailers.



Supercede:



This bulletin is being revised to include the 2013 model year and update information. Please discard Corporate Bulletin Number 06-08-44-012E



(Section 08 - Body and Accessories).



Navigation System Map Updates



The location information (streets, Points of Interest, etc.) on a vehicle's navigation system ages at a rate of 10%-20% per year. As the map data



becomes out of date, the functionality of the navigation system declines. Offering GM customers new map updates will ensure that the customers



have the latest information for their system.



Map updates can be purchased from the GM Navigation Center in two ways:



- GM Navigation Disc Center 1-877-628-3472



- Via the web through gmnavdisc.com



For information on the most recent map version available for each make/model/year, visit the GM Navigation Center online.



The Nav Disc Center will always have the latest information on map versions and compatibility. Please contact them if you have any questions on



2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 303



the latest version available for a specific vehicle.



Special Notes on Map Updates



- General Motors offered a Navigation Disc Update Program for 2006 and 2007 model year vehicles. Customers who purchased vehicles with



nav systems were eligible for two free map updates. This program concluded on December 31, 2009. The DVD Navigation Update Program



policy has expired. Communications were sent to 2006 MY and 2007 MY vehicle owners when the program ended, informing them that they



are no longer eligible for free annual updates.



- There is no longer a reduced price offered for warranty discs. Discs required for warranty repairs must be purchased at the retail price. The



maximum allowance for warranty reimbursements has been revised to reflect the change in pricing.



AVN Software Update Discs



Technical Service Bulletins are sometimes generated to address specific navigation radio operational or performance issues. When a navigation



radio bulletin is issued, it may contain instructions to install an advanced vehicle navigation (AVN) software update with a specific part number.



GM dealers must order advanced vehicle navigation (AVN) software update discs from the Nav Disc Center, as directed in the specific bulletin.



AVN software update discs are for the dealer to update the navigation radio software only. They do NOT update or replace the navigation map disc



that is supplied with the vehicle. Please order these parts only as needed. There is a limited supply of these discs available, so dealers may only



order one of a specific part number. Do not order these discs for stock. AVN software update discs can be used to reprogram more than one vehicle.



Software update discs are free of charge; dealers are required to pay for shipping.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1677

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1677



The electronic brake control module (EBCM) and the engine control module (ECM) simultaneously control the traction control. The ECM reduces



the amount of torque supplied to the drive wheels and the EBCM actively applies the brakes to the front wheels in order to reduce torque. The



EBCM sends a GMLAN serial data message to the engine control module (ECM) indicating the function that has been requested.



Conditions for Running the DTC



* The ignition is ON.



* The DTCs run continuously once the above condition is met.



Conditions for Setting the DTC



The ECM detects an invalid signal from the EBCM.



Action Taken When the DTC Sets



DTC P0856 is a Type C DTC.



Conditions for Clearing the DTC



DTC P0856 is a Type C DTC.



Reference Information



DTC Type Reference



Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code



(DTC) Type Definitions)



Circuit/System Verification



1. Observe the Freeze Frame/Failure Records with a scan tool.



2. Clear the DTCs with a scan tool.



3. Ignition OFF for 30 seconds.



4. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the



conditions that you observed from the Freeze Frame/Failure Records data.



瀚慖f DTC P0856 failed this ignition, replace the EBCM.



Repair Instructions



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming.



P0872



DTC P0872 or P0873



Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions) provides an overview of each diagnostic category.



DTC Descriptors



DTC P0872



- Transmission Fluid Pressure (TFP) Switch 3 Circuit Low Voltage



DTC P0873



- Transmission Fluid Pressure (TFP) Switch 3 Circuit High Voltage



Diagnostic Fault Information

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1381

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1381



2. Ignition ON, perform the Instrument Cluster Gauge Sweep test with the scan tool, verify that the fuel level gauge sweeps from its low to high



position



瀚慖f the fuel level gauge does not sweep, replace the P16 Instrument Cluster.



3. Command the All Indicators test ON and OFF with the scan tool, verify that the low fuel level indicator turns ON and OFF.



瀚慖f the low fuel level indicator always stays on or always off, replace the P16 Instrument Cluster.



Circuit/System Testing



1. Ignition OFF, disconnect the harness connector at the appropriate fuel level sensor.



2. Test for less than 30 ohm at the low reference circuit terminal C.



瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K20



Engine Control Module.



3. Ignition ON, test for 4.8-5.2 V between the signal circuit terminal D and ground.



瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K20 Engine Control



Module.



瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace



the K20 Engine Control Module.



4. If all circuits test normal, replace the appropriate fuel level sensor.



Repair Instructions



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



* Primary Fuel Level Sensor Replacement (See: Powertrain Management/Computers and Control Systems/Fuel Level Sensor/Service and



Repair)



* Secondary Fuel Tank Module Replacement (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Tank Unit/Service and



Repair/Secondary Fuel Tank Module Replacement)



* Control Module References (See: Testing and Inspection/Programming and Relearning) for the ECM replacement, programming and setup



P0463



DTC P0461-P0464, P2066, P2067, or P2068



Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions) provides an overview of each diagnostic category.



DTC Descriptors



DTC P0461



- Fuel Level Sensor 1 Performance



DTC P0462



- Fuel Level Sensor 1 Circuit Low Voltage



DTC P0463



- Fuel Level Sensor 1 Circuit High Voltage



DTC P0464



- Fuel Level Sensor Circuit Intermittent



DTC P2066



- Fuel Level Sensor 2 Performance



DTC P2067



- Fuel Level Sensor 2 Circuit Low Voltage

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 721


* The security indicator will be illuminated.



Conditions for Clearing the DTC



* A current DTC will be cleared when a valid transponder value has been read and authenticated.



* A history DTC will be cleared after 100 malfunction-free ignition cycles or when a scan tool is used to clear DTCs.



Reference Information



Schematic Reference



Immobilizer Schematics (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Diagrams/Electrical Diagrams/Immobilizer



Schematics)



Connector End View Reference



Component Connector End Views (See: Diagrams/Connector Views)



Description and Operation



Immobilizer Description and Operation (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Description and



Operation/Immobilizer Description and Operation)



Electrical Information Reference



* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit



Testing/Circuit Testing)



* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic



Procedures/Connector Repairs/Connector Repairs)



* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General



Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)



* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring



Repairs/Wiring Repairs)



Scan Tool Reference



Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information



Circuit/System Verification



Replace the suspected inoperative or malfunctioning key. DTC B3935 should not reset and the vehicle should start.



If the replacement key results in the resetting of DTC B3935, replace the TDM.



Repair Instructions



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



* Replacing Keys (North America except Canada) (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Service and



Repair/Replacing Keys (North America Except Canada))



* Control Module References (See: Testing and Inspection/Programming and Relearning) for theft deterrent module replacement, setup, and



programming



B3976



DTC B3976



Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions) provides an overview of each diagnostic category.



DTC Descriptor



DTC B3976 46



- Unconfigured Transponder/Vehicle Configuration Not Programmed



Circuit/System Description



When the theft deterrent module (TDM) is in the learn coded key state, the TDM checks the current key to ensure it has been configured as a proper

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1212

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1212



DTC P0270



- Cylinder 4 Injector Control Circuit Low Voltage



DTC P0271



- Cylinder 4 Injector Control Circuit High Voltage



DTC P0273



- Cylinder 5 Injector Control Circuit Low Voltage



DTC P0274



- Cylinder 5 Injector Control Circuit High Voltage



DTC P0276



- Cylinder 6 Injector Control Circuit Low Voltage



DTC P0277



- Cylinder 6 Injector Control Circuit High Voltage



Diagnostic Fault Information



Circuit/System Description



The control module enables the appropriate fuel injector on the intake stroke for each cylinder. Ignition voltage is supplied directly to the fuel



injectors. The control module controls each fuel injector by grounding the control circuit with a solid state device called a driver. The control



module monitors the status of each driver. Each driver has a feedback voltage circuit which the Engine Control Module (ECM) monitors. The



injector control circuits are pulled-up to voltage within the ECM. The ECM can determine if a control circuit is open, shorted to ground, or shorted



to a voltage by monitoring the feedback voltage.



Conditions for Running the DTC



* The engine speed is greater than 80 RPM.



* The ignition voltage is between 10-18 V.



* The fuel injector has been commanded ON and OFF at least once.



* The DTCs run continuously once the above conditions are met.



Conditions for Setting the DTC



P0201, P0202, P0203, P0204, P0205, or P0206



The ECM detects the injector control circuit is open for greater than 4 s or for a cumulative of 50 s.



P0261, P0264, P0267, P0270, P0273, or P0276



The ECM detects the injector control circuit is shorted to ground for greater than 4 s or for a cumulative of 50 s.



P0262, P0265, P0268, P0271, P0274, or P0277



The ECM detects the injector control circuit is shorted to voltage for greater than 4 s or for a cumulative of 50 s.



Action Taken When the DTC Sets

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 2029

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 2029



* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic



Procedures/Connector Repairs/Connector Repairs)



* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General



Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)



* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring



Repairs/Wiring Repairs)



Scan Tool Reference



Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information



Circuit/System Verification



1. Verify there are no other U code DTCs set.



瀚慖f other U code DTCs are set, diagnose them first. Refer to Control Module U Code List (See: Diagnostic Trouble Code



Descriptions/Control Module U Code List).



2. Refer to Data Link References (See: Powertrain Management/Computers and Control Systems/Information Bus/Testing and



Inspection/Initial Inspection and Diagnostic Overview) to determine if the control module setting DTC U0074 is on the mid speed or chassis



high speed serial data circuits.



Circuit/System Testing



Note: Each control module may need to be disconnected to isolate a circuit fault. Use the schematic to identify the following:



* Control modules the vehicle is equipped with



* Mid speed or chassis high speed serial data circuit terminating resistors



* Control module locations on the serial data circuits



* Each control modules mid speed or chassis high speed serial data circuit terminals



1. Attempt to communicate with all control modules on the mid speed or chassis high speed serial data circuit. Refer to Data Link References (



See: Powertrain Management/Computers and Control Systems/Information Bus/Testing and Inspection/Initial Inspection and Diagnostic



Overview). Communications should not be available with two or more control modules on the mid speed or chassis high speed serial data



circuit.



瀚慖f only one control module is not communicating, diagnose that control module only. Refer to DTC U0100-U02FF (See: U Code



Charts/U0100).



2. Disconnect the scan tool from the DLC. The following tests will be done at the DLC connector.



3. All access doors closed, ignition OFF for 60 seconds, test for less than 10 ohm between the ground circuit terminal 5 and ground.



瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.



4. Ignition ON, test for less than 3 V between the serial data circuits listed below and ground:



* Mid speed GMLAN serial data terminal 3



* Mid speed GMLAN serial data terminal 11



* Chassis high speed GMLAN serial data terminal 12



* Chassis high speed GMLAN serial data terminal 13



瀚慖f greater than the specified range, test the serial data circuit for a short to voltage. Refer to Testing the Serial Data Circuits for a Short to



Voltage.



5. Ignition OFF for 60 seconds, test for greater than 100 ohm between the serial data circuits listed below and ground:



* Mid speed GMLAN serial data terminal 3



* Mid speed GMLAN serial data terminal 11



* Chassis high speed GMLAN serial data terminal 12



* Chassis high speed GMLAN serial data terminal 13



瀚慖f not the specified value, test the serial data circuit for a short to ground. Refer to Testing the Serial Data Circuits for a Short to ground.



6. Test for 50-70 ohm between the serial data circuits listed below:



* Mid speed GMLAN serial data circuits terminal 3 and terminal 11



* Chassis high speed GMLAN serial data circuits terminal 12 and terminal 13



瀚慖f less than 35 ohm, test for a short between the serial data circuits. Refer to Testing the Serial Data Circuits for a Short between the