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 2133 (LIGHTING 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 B1395 | DTC B1395 03 Device Voltage Reference Output 1 Circuit Voltage Below Threshold DTC B1395 07 Device Voltage Reference Output 1 Circuit Voltage Above Threshold |
| DTC B2530 | DTC B2530 00 Front Fog Lamps Control Circuit |
| DTC B2540 | DTC B2540 02 Rear Fog Lamp Control Circuit Short to Ground DTC B2540 05 Rear Fog Lamp Control Circuit Short to Battery or Open |
| DTC B2545 | DTC B2545 00 Backup Lamps Circuit |
| DTC B2555 | DTC B2555 01 Passenger Compartment Lamp Control Circuit Short to Battery DTC B2555 02 Passenger Compartment Lamp Control Circuit Short to Ground |
| DTC B2575 | DTC 2575 00 Headlamp Control Circuit |
| DTC B257A | DTC B257A 00 Headlamp Switch Input Signals Mismatch |
| DTC B2580 | DTC B2580 00 Headlamp High Beam Control Circuit |
| DTC B2585 | DTC B2585 00 Park Lamp Control Circuit |
| DTC B2600 (With X88, Z75, and Z88) | DTC B2600 00 Daytime Running Lamp Control Circuit |
| DTC B2600 (With T4Q) | DTC B2600 00 Daytime Running Lamp Control Circuit |
| DTC B2610 | DTC B2610 00 Passenger Compartment Dimming 1 Circuit |
| DTC B2615 | DTC B2615 00 Passenger Compartment Dimming 2 Circuit |
| DTC B2625 | DTC B2625 00 Display Dimming Pulse Width Modulation (PWM) Output Circuit |
| DTC B2635 | DTC B2635 00 Passenger Compartment Dimming 2 Circuit |
| DTC B2645 | DTC B2645 03 Ambient Light Sensor Circuit Voltage Below Threshold DTC B2645 07 Ambient Light Sensor Circuit Voltage Above Threshold |
| DTC B2652 | DTC B2652 00 Passenger Compartment Dimming 3 Circuit |
| DTC B3445 | DTC B3445 00 Stop Lamp Circuit |
| DTC B3588 | DTC B3588 02 Rear Fog Lamp Switch Circuit Short to Ground |
| DTC B3600 | DTC B3600 03 Passenger Compartment Dimming Request Signal Circuit Voltage Below Threshold DTC B3600 07 Passenger Compartment Dimming Request Signal Circuit Voltage Above Threshold |
| DTC B3884 | DTC B3884 00 Center High Mounted Stop Lamp (CHMSL) Circuit |
| DTC B3891 | DTC B3891 02 Trailer Fog Lamps Circuit Short to Ground DTC B3891 05 Trailer Fog Lamps Circuit Short to Battery or Open |
| DTC C0277 or C0890 | DTC C0277 06 Brake Pedal Position Sensor Circuit Short to Ground or Open DTC C0277 07 Brake Pedal Position Sensor Circuit Voltage Above Threshold DTC C0277 09 Brake Pedal Position Sensor Circuit Rate of Change Above Threshold DTC C0277 4B Brake Pedal Position Sensor Calibration Not Learned DTC C0890 03 Device Voltage Reference Output 3 Circuit Voltage Below Threshold DTC C0890 07 Device Voltage Reference Output 3 Circuit Voltage Above Threshold |
| DTC C0297 | DTC C0297 00 Brake Applied Output 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.