Thursday, June 27, 2019

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 647


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



Circuit/System Testing



1. Ignition OFF, disconnect the harness connector at the center high mounted stop lamp.



2. Test for less than 5.0 ohm between the ground circuit terminal B and ground.



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



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



4. Ignition ON, turn the stop lamps ON and OFF by applying and releasing the brake pedal. The test lamp should turn ON and OFF when



changing between the selected states.



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.



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.



5. If all circuits test normal, replace the center high mounted stop lamp.



Repair Instructions



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



* Tail Lamp Bulb Replacement (Yukon) (See: Lighting and Horns/Tail Lamp/Tail Light Bulb/Service and Repair/Tail Lamp Bulb



Replacement (Yukon))Tail Lamp Bulb Replacement (Cadillac) (See: Lighting and Horns/Tail Lamp/Tail Light Bulb/Service and Repair/Tail



Lamp Bulb Replacement (Cadillac))Tail Lamp Bulb Replacement (Tahoe, Avalanche) (See: Lighting and Horns/Tail Lamp/Tail Light



Bulb/Service and Repair/Tail Lamp Bulb Replacement (Tahoe, Avalanche))Tail Lamp Bulb Replacement (Tahoe) (See: Lighting and



Horns/Brake Lamp/Brake Light Bulb/Service and Repair/Tail Lamp Bulb Replacement (Tahoe))Tail Lamp Bulb Replacement (Yukon



Two-mode Hybrid) (See: Lighting and Horns/Brake Lamp/Brake Light Bulb/Service and Repair/Tail Lamp Bulb Replacement (Yukon



Two-mode Hybrid))



* High Mount Stop Lamp Replacement (Yukon Two-mode Hybrid) (See: Lighting and Horns/Center Mounted Brake Lamp/Service and



Repair/High Mount Stop Lamp Replacement (Yukon Two-mode Hybrid))High Mount Stop Lamp Replacement (Yukon) (See: Lighting and



Horns/Center Mounted Brake Lamp/Service and Repair/High Mount Stop Lamp Replacement (Yukon))High Mount Stop Lamp Replacement



(Avalanche) (See: Lighting and Horns/Center Mounted Brake Lamp/Service and Repair/High Mount Stop Lamp Replacement (Avalanche)



)High Mount Stop Lamp Replacement (Escalade) (See: Lighting and Horns/Center Mounted Brake Lamp/Service and Repair/High Mount



Stop Lamp Replacement (Escalade))



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



B3567



DTC B3567



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 B3567 01



- Driver Information Center (DIC) Select Switch Circuit Short To Battery



DTC B3567 59



- Driver Information Center (DIC) Select Switch Circuit/Component Protection Time-Out



Diagnostic Fault Information

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