Conditions for Setting the DTC
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.
DTC C1114 will set as current DTC, if one of the following conditions is true:
- The TBCM detects an open in the trailer auxiliary supply voltage circuit.
- The TBCM detects short to ground in the trailer auxiliary supply voltage circuit.
- The TBCM detects short to battery positive in the manual apply signal circuit.