Trailer Brake Control Relay Replacement (2500, 3500)

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Trailer Brake Control Relay (2500, 3500)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
Preliminary Procedures Turn the ignition switch to the OFF position. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
1	Trailer Brake Control Relay Electrical Connector Procedure: Disconnect the electrical connector.
2	Trailer Brake Control Relay Bolt (Qty: 2) CAUTION: Refer to Fastener Caution . Procedure: Loosen, but do not remove the bolts. It is not necessary to completely remove the bolts. Tighten: 6 N.m (53 lb in)
3	Trailer Brake Control Relay Procedure: Slide the relay upward to remove.