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 G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 426 (WIRING SYSTEMS AND POWER MANAGEMENT - INTRODUCTION)DIAGNOSTIC INFORMATION AND PROCEDURESDIAGNOSTIC CODE INDEX
2008 Chevrolet Chevy Express G3500, Van Passenger Extended
Diagnostic Code Index
2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Diagnostic Code Index
WARNING: This page is about a different car, the 2009 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| DTC B1370 | 1370 01: Device Ignition 1 (ON and START) Circuit Short to Battery 1370 02: Device Ignition 1 (ON and START) Circuit Short to Ground 1370 04: Device Ignition 1 (ON and START) Circuit Open |
| DTC B1380 | 1380 59: Device Ignition ACCESSORY Circuit Component Protection Timeout |
| DTC B1385 | 1385 01: Device Ignition START Circuit Short to Battery 1385 59: Device Ignition START Circuit Component Protection Timeout |
| DTC B1422 | 1422 52: Device Power Moding Error Compare Failure |
| DTC B1440 | B1440 03: Power Mode Master Input Circuits Mismatch Voltage Below Threshold B1440 08: Power Mode Master Input Circuits Mismatch Signal Invalid |
RENDER: 1.0x
NO RELATED
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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.