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 DIAGNOSISBODY & FRAMEWINDOWSFIXED & MOVEABLE WINDOW SYSTEMSDIAGNOSTIC INFORMATION AND PROCEDURESPOWER WINDOWS MALFUNCTIONCOMPONENT TESTINGDRIVER WINDOW SWITCH
2008 Chevrolet Chevy Express G3500, Van Passenger Extended
Driver Window Switch
2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Driver Window Switch
- Ignition OFF, disconnect the harness connector at the driver window switch.
- Test for infinite resistance between the control terminals A and D and the B+ circuit terminal C with the RF switch in the INACTIVE position.
- If less than the specified value, replace the driver window switch.
- Test for less than 2 ohms between the control terminal A and the B+ circuit terminal C with the RF switch in the UP position.
- If greater than the specified range, replace the driver window switch.
- Test for less than 2 ohms between the control terminal D and the B+ circuit terminal C with the RF switch in the DOWN position.
- If greater than the specified range, replace the driver window switch.
- Test for infinite resistance between the control terminals G and H and the B+ circuit terminal C with the driver switch in the INACTIVE position.
- If less than the specified value, replace the driver window switch.
- Test for less than 2 ohms between the control terminal G and the B+ circuit terminal C with the switch in the UP position.
- If greater than the specified range, replace the driver window switch.
- Test for less than 2 ohms between the control terminal H and the B+ circuit terminal C with the switch in the DOWN position.
- If greater than the specified range, replace the driver window switch.
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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.