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HOMESERVICE MANUALSCHEVROLET2006SUBURBAN C2500, 6.0 UREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1154 (TRAILER BRAKE CONTROL SYSTEM)REPAIR INSTRUCTIONSTRAILER BRAKE CONTROL RELAY REPLACEMENT
2006 Chevrolet Suburban C2500, 6.0 U

Trailer Brake Control Relay Replacement

2006 Chevrolet Suburban C2500, 6.0 USECTION Trailer Brake Control Relay Replacement
WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 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
GM1862976Courtesy of GENERAL MOTORS CORP.
Callout Component Name

Preliminary Procedures

  1. Turn the ignition switch to the OFF position.
  2. 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)
NOTE: Refer to Fastener Notice .

Procedure: 
Loosen, but do not remove the bolts. It is not necessary to completely remove the bolts.

Tighten:  9 N.m (80 lb in)
3 Trailer Brake Control Relay
Procedure: 
Slide the relay upward to remove.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.