Visual/Physical Inspection
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.
- Inspect for aftermarket devices which could affect the operation of the Trailer Brake Control system. Refer to Checking Aftermarket Accessories .
- For vehicles displaying a TRAILER NOT CONNECTED message with a trailer connected.
- Inspect the trailer brake connector and circuits for proper connections.
- Insure the trailer is equipped with electric brakes - only trailers equipped with electric brakes will be recognized and function correctly with TBCM.
- Minimum of one fully functioning axle of brakes is required for the TBCM system to function correctly.
- The Trailer brake connector should measure less than 2 ohms of resistance between pins B & C of the trailer side connector