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 MANUALSCHEVROLET2018SILVERADO 2500 HD WT, 2D PICKUP, 6.0L ENG VIN G, RWD, GASREPAIR AND DIAGNOSISBRAKESBRAKES CONTROL SYSTEMSTRAILER BRAKE CONTROLS SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESDTC C111A: TRAILER BRAKE POWER CONTROL MODULE EEPROM ERROR/TRAILER BRAKE POWER CONTROL MODULE TEMPERATURE HIGHCONDITIONS FOR RUNNING THE DTC
2018 Chevrolet Silverado 2500 HD WT, 2D Pickup, 6.0L Eng VIN G, RWD, Gas
Conditions for Running the DTC
2018 Chevrolet Silverado 2500 HD WT, 2D Pickup, 6.0L Eng VIN G, RWD, GasSECTION Conditions for Running the DTC
The trailer brake power control module runs the program to detect an internal fault when power up is commanded. The only requirements are voltage and ground. This program runs even if the voltage is out of the valid operating range.
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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.