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 MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2182 (TRAILER BRAKE CONTROL SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDIAGNOSTIC CODE INDEX
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2
Diagnostic Code Index
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Diagnostic Code Index
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| DTC B3894 (Gasoline Without LY6) | DTC B3894 5A Stop Lamp Switch Circuit Plausibility Failure |
| DTC B3894 (Gasoline With LY6, or Diesel) | DTC B3894 5A Stop Lamp Switch Circuit Plausibility Failure |
| DTC C0561 (Gasoline Without LY6) | DTC C0561 F0 System Disabled Information Stored Invalid Serial Data Received DTC C0561 F1 System Disabled Information Stored Invalid Serial Data Received |
| DTC C0561 (Gasoline With LY6, or Diesel) | DTC C0561 F0 System Disabled Information Stored Invalid Serial Data Received DTC C0561 F1 System Disabled Information Stored Invalid Serial Data Received |
| DTC C0870, C1112, C1113, C1114, or C1119 (Gasoline Without LY6) | DTC C0870 00 Device Voltage Reference Output 1 Circuit DTC C1112 00 Trailer Brake Control Relay Low Control Circuit DTC C1113 01 Trailer Brake Control Relay High Control Circuit Short to Battery DTC C1114 00 Trailer Brake Control Solenoids Control Circuit DTC C1119 00 Trailer Brake Control Relay Feedback Circuit |
| DTC C0870, C1112, C1113, C1114, or C1119 (Gasoline With LY6, or Diesel) | DTC C0870 00 Device Voltage Reference Output 1 Circuit DTC C1112 00 Trailer Brake Control Relay Low Control Circuit DTC C1113 01 Trailer Brake Control Relay High Control Circuit Short to Battery DTC C1114 00 Trailer Brake Control Solenoids Control Circuit DTC C1119 00 Trailer Brake Control Relay Feedback Circuit |
| DTC C0880, C0890, C1115, C1116, C1117, or C1118 (Gasoline Without LY6) | DTC C0880 00 Device Voltage Reference Output 2 Circuit DTC C0890 00 Device Voltage Reference Output 3 Circuit DTC C1115 08 Manual Trailer Brake Apply Request Switch Signal Invalid DTC C1115 5A Manual Trailer Brake Apply Request Switch Signal Plausibility Failure DTC C1116 00 Manual Trailer Brake Apply Request Signal 1 DTC C1117 00 Manual Trailer Brake Apply Request Signal 2 DTC C1118 00 Trailer Brake Control Sensitivity Switch Circuit DTC C1118 08 Trailer Brake Control Sensitivity Switch Circuit Signal Invalid |
| DTC C0880, C0890, C1115, C1116, C1117, or C1118 (Gasoline With LY6, or Diesel) | DTC C0880 00 Device Voltage Reference Output 2 Circuit DTC C0890 00 Device Voltage Reference Output 3 Circuit DTC C1115 08 Manual Trailer Brake Apply Request Switch Signal Invalid DTC C1115 5A Manual Trailer Brake Apply Request Switch Signal Plausibility Failure DTC C1116 00 Manual Trailer Brake Apply Request Signal 1 DTC C1117 00 Manual Trailer Brake Apply Request Signal 2 DTC C1118 00 Trailer Brake Control Sensitivity Switch Circuit DTC C1118 08 Trailer Brake Control Sensitivity Switch Circuit Signal Invalid |
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.