Sierra 2500 Denali 2WD V8-6.0L (2011)
Trailer Towing Relay: Service and Repair
Trailer Brake Control Relay Replacement (2500, 3500 Pickup)
Trailer Brake Control Relay Replacement (2500, 3500 Pickup)
Removal Procedure
1. Place the ignition switch in 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. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle (See: Maintenance/Vehicle Lifting/Service and Repair).
4. Disconnect the trailer brake control module and trailer brake control relay electrical connectors.
5. Loosen, but do not remove, the trailer brake control module bracket bolts (1).
6. Slide the trailer brake control module bracket toward the right of the vehicle and remove assembly from the vehicle.
