Sierra Denali RWD V8-6.2L (2009)
Trailer Brake Control Module: Service and Repair
Trailer Brake Control Module Replacement
Trailer Brake Control Module Replacement (1500)
Removal Procedure
1. Turn the ignition switch to the OFF position.
Note
Do not remove the spare wheel hoist.
2. Remove the spare tire and wheel assembly. Refer to Spare Wheel Hoist Replacement (See: Maintenance/Wheels and Tires/Tires/Spare
Tire/Service and Repair) .
3. Disconnect the trailer brake control module electrical connector.
Note
It is not necessary to completely remove the bolts.
4. Reach above the trailer brake control module and relay bracket and loosen, but do not remove, the trailer brake control module bolts (1).