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 449 (POWER SEAT SYSTEM)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 B1335 | B1335: Device Power 3 Circuit Current Above Threshold |
| DTC B1735, B1740, B1745, B1750, B1755, B1760, B1815, B1820, B1830, B1835, B1840, B1845, B1940, or B1945 | B1735 01: Seat Front Up Switch Circuit Short to Battery B1740 01: Seat Front Down Switch Circuit Short to Battery B1745 01: Seat Rear Up Switch Circuit Short to Battery B1750 01: Seat Rear Down Switch Circuit Short to Battery B1755 01: Seat Assembly Forward Switch Circuit Short to Battery B1760 01: Seat Assembly Rearward Switch Circuit Short to Battery B1815 01: Seat Recline Forward Switch Circuit Short to Battery B1820 01: Seat Recline Rearward Switch Circuit Short to Battery B1830 01: Seat Lumbar Forward Switch Circuit Short to Battery B1835 01: Seat Lumbar Rearward Switch Circuit Short to Battery B1840 01: Lumbar Up Switch Circuit Malfunction B1845 01: Seat Lumbar Down Switch Circuit Short to Battery |
| DTC B1825, B1850, B1860, B2355, B2365, or B2375 | B1825 08: Seat Recline Position Sensor Circuit Signal Invalid B1825 58: Seat Recline Position Sensor Circuit Incorrect Reaction After Event B1850 08: Seat Lumbar Horizontal Position Sensor Circuit Signal Invalid B1850 58: Seat Lumbar Horizontal Position Sensor Circuit Incorrect Reaction After Event B1860 08: Seat Lumbar Vertical Position Sensor Circuit Signal Invalid B1860 58: Seat Lumbar Vertical Position Sensor Circuit Incorrect Reaction After Event B2355 08: Seat Front Vertical Position Sensor Circuit Signal Invalid B2355 58: Seat Front Vertical Position Sensor Circuit Incorrect Reaction After Event B2365 08: Seat Rear Vertical Position Sensor Circuit Signal Invalid B2365 58: Seat Rear Vertical Position Sensor Circuit Incorrect Reaction After Event B2375 08: Seat Horizontal Position Sensor Circuit Signal Invalid B2375 58: Seat Horizontal Position Sensor Circuit Incorrect Reaction After Event |
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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.