Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1155 (TRAILER BRAKE CONTROL SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC C1114CONDITIONS FOR SETTING THE DTC
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6
Conditions for Setting the DTC
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION 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.
RENDER: 1.0x
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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.