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)
2008 Chevrolet Chevy Express G3500, Van Passenger Extended
Section 449 (Power Seat System)
2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Section 449 (Power Seat System)
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.
- Specifications
- Schematic and Routing Diagrams
- Diagnostic Information and Procedures
- Diagnostic Code Index
- Diagnostic Starting Point - Seats
- DTC B1335
- DTC B1735, B1740, B1745, B1750, B1755, B1760, B1815, B1820, B1830, B1835, B1840, B1845, B1940, or B1945
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions Taken When the DTC Sets
- Conditions for Clearing the DTCs
- Diagnostic Aids
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Procedures
- DTC B1825, B1850, B1860, B2355, B2365, or B2375
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions Taken When the DTC Sets
- Conditions for Clearing the DTCs
- Diagnostic Aids
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Procedures
- Symptoms - Power Seats
- Lumbar Support Inoperative (Without Memory A45)
- Lumbar Support Inoperative (With Memory A45)
- Power Seat Inoperative (Without Memory A45)
- Power Seat Inoperative (With Memory A45)
- Repair Instructions
- Description and Operation
- Lumbar Support Description and Operation (Without Memory A45)
- Lumbar Support Description and Operation (With Memory A45 Disabled)
- Lumbar Support Description and Operation (With Memory A45 Enabled)
- Memory Seats Description and Operation
- Power Seats System Description and Operation (Without Memory A45)
- Power Seats System Description and Operation (with A45 Disabled)
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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.