Diagnostic Code Index

2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Diagnostic Code Index
WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC CODE INDEX

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