Monday, March 4, 2019

2016 GMC Truck Acadia AWD V6-3.6L Technical Service Bulletin # 07-00-89-021P Date: 130301

2016 GMC Truck Acadia AWD V6-3.6L Technical Service Bulletin # 07-00-89-021P Date: 130301



Vehicle -Trailer Towing and RV Dinghy Towing Info.



INFORMATION



2016 GMC Truck Acadia AWD V6-3.6L Page 358



Bulletin No.: 07-00-89-021P



Date: March 01, 2013



Subject: Supplemental Information on Trailer Towing and Recreational Vehicle Towing (Dinghy Towing)



Models:



2008-2013 Buick Enclave



2009-2013 Chevrolet Traverse



2007-2013 GMC Acadia



2007-2010 Saturn OUTLOOK



Supercede:



This bulletin is being revised to add an Important statement to the Towing a Trailer section. Please discard Corporate Bulletin Number



07-00-89-021O (Section 00 - General Information).



The purpose of this bulletin is to inform dealers of special procedures necessary when towing a trailer or when towing the vehicle behind a



recreational vehicle.



Towing a Trailer



Trailer Weight Information



The following chart shows how much the trailer can weigh, based on the vehicle powertrain combination and whether the vehicle is equipped with



Trailer Provision (RPO V92). Retailers should refer customers to the appropriate Owner Manual for important trailering tips, vehicle maintenance,



and safety rules before towing a trailer.



Important



The following modifications are intended to address the ability to update a vehicle to allow the electrical function for trailer lighting when



trailer towing is desired only. Modification of a non-V92 vehicle to bring it up to the towing capacity of a V92 equipped vehicle is not



practical or recommended. The V92 package when ordered as part of the original build of the vehicle includes additional cooling capability,



engine and transmission calibrations to include a Tow/Haul mode, which are not available for retrofit. The towing capability will remain at



the non-V92 limits, even after the recommended electrical updates included in this bulletin to allow trailer lighting to function.



Towing a Trailer with a Vehicle without Trailer Provisions (RPO V92) (2007 Model Year Only)



These vehicles must be modified by installing a new underhood bussed electrical center (UBEC) to provide full functionality for 4 circuits: ground,



tail lamps, RH and LH stop/turn lamps. Perform this modification only if the customers will be using the vehicle to tow.



The replacement of the UBEC remains the best solution to upgrade the vehicles wiring for towing. The electrical circuitry for the tail/stop lamps is



controlled by the BCM and splicing into the body harness is not recommended.



The backup lamp circuit will also need to be modified using the following procedure:



1. Disconnect the X7 connector from the Body Control Module (BCM).



2. Remove the terminal for pin 3 from the BCM X7 connector. The wire to this terminal is dark blue and is the 38 circuit.



3. Re-connect the X7 connector to the BCM.



4. Cut the terminal off the end of this wire and strip the end of the wire.



2016 GMC Truck Acadia AWD V6-3.6L Page 359



5. Splice this wire into the 24 circuit wire that goes into BCM connector X6, pin 2. The 24 circuit is light green.



Towing a Trailer with a Vehicle without Trailer Provisions (RPO V92) (2008-2012 Model Year Built Prior to May 01, 2012)



These vehicles must be modified by installing a new underhood bussed electrical center (UBEC) to provide full functionality for 4 circuits: ground,



tail lamps, RH and LH stop/turn lamps. Perform this modification only if the customers will be using the vehicle to tow.



The replacement of the UBEC remains the best solution to upgrade the vehicles wiring for towing. The electrical circuitry for the tail/stop lamps is



controlled by the BCM and splicing into the body harness is not recommended.



Towing a Trailer with a Vehicle without Trailer Provisions (RPO V92) (2012-2013 Model Year Built After April 30, 2012)



These vehicles must be modified by installing the necessary relays and fuses into the underhood bussed electrical center (UBEC) to provide full



functionality for 4 circuits: ground, tail lamps, RH and LH stop/turn lamps. Refer to the illustration below for relay and fuse locations. Perform this



modification only if the customers will be using the vehicle to tow.



Recreational Vehicle Towing (Dinghy Towing)



Recreational Vehicle Towing Information



Important



Vehicles that are "dinghy towed" must be started at the beginning of each day and at each fuel stop for a minimum of five minutes.



Recreational vehicle towing means towing the vehicle behind another vehicle - such as behind a motorhome. The two most common types of



recreational vehicle towing are known as "dinghy towing" (towing the vehicle with all four wheels on the ground) and "dolly towing" (towing the



vehicle with two wheels on the ground and two wheels up on a device known as a "dolly"). With the proper preparation and equipment, many



vehicles can be towed in these ways. Refer to the appropriate model/model year Owner Manual for towing preparation guidelines and dolly and



dinghy towing procedures. The Towing Chart below summarizes powertrain combination compatibility with dolly and dinghy towing methods.



*Caution



These vehicle can be dinghy towed from the front for unlimited miles at 65 mph (105 km/h). To avoid vehicle damage, never exceed 65 mph (105



km/h) while towing these vehicles. The repairs would not be covered by the warranty.



**Caution



Dolly towing an all-wheel drive vehicle may result in premature failure of the rear drive module.



Dinghy Towing Procedure (2007-2008 Model Year)



2016 GMC Truck Acadia AWD V6-3.6L Page 360



Caution



If you tow your vehicle without performing each of the steps listed under "Dinghy Towing," you could damage the automatic transmission. Be



sure to follow all steps of the dinghy towing procedure prior to and after towing your vehicle.



Caution



Don't tow a vehicle with the front drive wheels on the ground if one of the front tires is a compact spare tire. Towing with two different tire



sizes on the front of the vehicle can cause severe damage to the transmission.



Important



All-wheel drive vehicles may only be dinghy towed from the front, with all four wheels on the ground.



1. Position the vehicle to tow. Shift the transmission to PARK (P) and turn the ignition to OFF.



2. Securely attach the vehicle being towed to the tow vehicle.



3. Set the parking brake.



4. Turn the ignition to ACCESSORY.



5. Shift your transmission to NEUTRAL (N).



6. To prevent your battery from draining while the vehicle is being towed, remove the 50 amp BATT1 fuse (1) in the UBEC and store in a safe



location.



7. Release the parking brake.



Once you have reached your destination, do the following steps:



1. Set the parking brake.



2. Reinstall the BATT1 fuse.



3. Shift the transmission to PARK (P), turn the ignition key to OFF and remove the key from the ignition.



4. Release the parking brake.



Dinghy Towing Procedure (2009-2012 Model Year Built Prior to May 01, 2012)



Caution



If you tow your vehicle without performing each of the steps listed under "Dinghy Towing," you could damage the automatic transmission. Be



sure to follow all steps of the dinghy towing procedure prior to and after towing your vehicle.



Caution



Don't tow a vehicle with the front drive wheels on the ground if one of the front tires is a compact spare tire. Towing with two different tire



sizes on the front of the vehicle can cause severe damage to the transmission.



Important



All-wheel drive vehicles may only be dinghy towed from the front, with all four wheels on the ground.



1. Position the vehicle to tow. Shift the transmission to PARK (P) and turn the ignition to OFF.



2. Securely attach the vehicle being towed to the tow vehicle.



3. Set the parking brake.



4. Turn the ignition to ACCESSORY.



2016 GMC Truck Acadia AWD V6-3.6L Page 361



5. Shift your transmission to NEUTRAL (N).



Important



The fuses must be removed in the order specified.



6. Remove the 15 amp ECM fuse (1) in the UBEC and store in a safe location.



7. To prevent your battery from draining while the vehicle is being towed, remove the 50 amp BATT1 fuse (2) in the UBEC and store in a safe



location.



8. Release the parking brake.



Once you have reached your destination, do the following steps:



1. Set the parking brake.



2. Reinstall the BATT1 fuse.



3. Reinstall the ECM fuse.



4. Shift the transmission to PARK (P), turn the ignition key to OFF and remove the key from the ignition.



5. Release the parking brake.



Dinghy Towing Procedure (2012-2013 Model Year Built After April 30, 2012)



Caution



If you tow your vehicle without performing each of the steps listed under "Dinghy Towing," you could damage the automatic transmission. Be



sure to follow all steps of the dinghy towing procedure prior to and after towing your vehicle.



Caution



Don't tow a vehicle with the front drive wheels on the ground if one of the front tires is a compact spare tire. Towing with two different tire



sizes on the front of the vehicle can cause severe damage to the transmission.



Important



All-wheel drive vehicles may only be dinghy towed from the front, with all four wheels on the ground.



1. Position the vehicle to tow. Shift the transmission to PARK (P) and turn the ignition to OFF.



2. Securely attach the vehicle being towed to the tow vehicle.



3. Set the parking brake.



Note



If the ignition is turned to the RUN position during this step, the MIL will illuminate with DTCs U0100 and P0700 set in the transmission



control module (TCM). To clear the DTCs, the ignition must be cycled three times.



4. Turn the ignition to ACCESSORY.



5. Shift your transmission to NEUTRAL (N).



2016 GMC Truck Acadia AWD V6-3.6L Page 362



Important



The fuses must be removed in the order specified.



6. Remove the 20 amp ECM 1 fuse (1) in the UBEC and store in a safe location.



7. To prevent your battery from draining while the vehicle is being towed, remove the 50 amp BATT1 fuse (3) in the UBEC and store in a safe



location.



8. Release the parking brake.



Once you have reached your destination, do the following steps:



1. Set the parking brake.



2. Reinstall the ECM fuse.



3. Reinstall the BATT1 fuse.



4. Reinstall the ECM 1 fuse.



5. Shift the transmission to PARK (P), turn the ignition key to OFF and remove the key from the ignition.



6. Release the parking brake.



Parts Information (2007-2012 Model Year Built Prior to May 01, 2012)



For part numbers and usage of the UBEC, see Group 02.483 of the appropriate Parts Catalog. Saturn retailers should refer to the appropriate model



year Parts & Illustration Catalog for the vehicle. Order the UBEC with the same option content including RPO V92.



Parts Information (2012-2013 Model Year Built After April 30, 2012)



Warranty Information



Please advise the customer that the installation and cost of the new underhood bussed electrical center (UBEC) will not be covered under the

No comments:

Post a Comment