Trailer Brake Control Relay Replacement (2500, 3500)

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Trailer Brake Control Relay, Electrical Connector & Bolts

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.