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 1502 (BATTERY, CHARGING SYSTEM AND STARTING SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDIAGNOSTIC CODE INDEX
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6
Diagnostic Code Index
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Diagnostic Code Index
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| DTC B1325 | B1325 03: Device Power Circuit Voltage Below Threshold B1325 07: Device Power Circuit Voltage Above Threshold |
| DTC B1424 | B1424 00: Device Voltage Low - Theft Deterrent Module |
| DTC B1516 | B1516 08: Battery Current Sensor Performance Signal Invalid B1516 66: Battery Current Sensor Performance Wrong Mounting Position |
| DTC B1517 | B1517 03: Battery Voltage Below Threshold - BCM B1517 07: Battery Voltage Above Threshold - BCM B1517 5A: Battery Voltage Plausibility Failure - BCM |
| DTC B1527 | B1527 00: High Parasitic Load |
| DTC C0895 | C0895 00: Device Voltage - Electronic Suspension Control Module |
| DTC C0899 | C0899 00: Device Voltage Low - EBCM (w/o JL4) C0899 03: Device Voltage Low - EBCM (JL4) |
| DTC C0900 | C0900 00: Device Voltage High - EBCM |
| DTC P0562 (ECM) | P0562: System Voltage Low - ECM |
| DTC P0562 (FPCM) | P0562: System Voltage Low - FPCM |
| DTC P0563 (ECM) | P0563: System Voltage High - ECM |
| DTC P0563 (FPCM) | P0563: System Voltage High - FPCM |
| DTC P0615 | P0615: Starter Relay Control Circuit |
| DTC P0621 | P0621: Generator L-Terminal Circuit |
| DTC P0622 | P0622: Generator F-Terminal Circuit |
| DTC P1668 | P1668: Generator L-Terminal Control Circuit |
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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.