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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 96 (FIXED & MOVEABLE WINDOW SYSTEMS)DIAGNOSTIC INFORMATION AND PROCEDURESPOWER WINDOWS MALFUNCTIONCOMPONENT TESTING
2008 Chevrolet Chevy Express G3500, Van Passenger Extended

Component Testing

2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Component Testing
WARNING: This page is about a different car, the 2008 Chevrolet Malibu Classic. However, it is still accessible from the selected car via links, so may be relevant.

Driver Window Switch

  1. Ignition OFF, disconnect the harness connector at the driver window switch.
  2. Test for infinite resistance between the signal terminals D and C and the B+ circuit terminal E with the LR switch in the INACTIVE position.
    • If less than infinite resistance, replace the driver window switch.
  3. Test for less than 2 ohms of resistance between the signal terminal D and the B+ circuit terminal E with the switch in the UP position.
    • If greater than 2 ohms, replace the driver window switch.
  4. Test for less than 2 ohms of resistance between the signal terminal C and the B+ circuit terminal E with the switch in the DOWN position.
    • If greater than 2 ohms, replace the driver window switch.
  5. Test for infinite resistance between the signal terminals G and H and the B+ circuit terminal E with the RR switch in the INACTIVE position.
    • If less than infinite resistance, replace the driver window switch.
  6. Test for less than 2 ohms of resistance between the signal terminal G and the B+ circuit terminal E with the switch in the UP position.
    • If greater than 2 ohms, replace the driver window switch.
  7. Test for less than 2 ohms of resistance between the signal terminal H and the B+ circuit terminal E with the switch in the DOWN position.
  8. If greater than 2 ohms, replace the driver window switch.
  9. Test for infinite resistance between the signal terminals B and C and the B+ circuit terminal E with the passenger switch in the INACTIVE position.
    • If less than infinite resistance, replace the driver window switch.
  10. Test for less than 2 ohms of resistance between the signal terminal B and the B+ circuit terminal E with the switch in the UP position.
    • If greater than 2 ohms, replace the driver window switch.
  11. Test for less than 2 ohms of resistance between the signal terminal C and the B+ circuit terminal E with the switch in the DOWN position.
  12. If greater than 2 ohms, replace the driver window switch.
  13. Test for infinite resistance between the signal terminals E and A and the B+ circuit terminal E with the driver switch in the INACTIVE position.
    • If less than infinite resistance, replace the driver window switch.
  14. Test for less than 2 ohms of resistance between the signal terminal E and the B+ circuit terminal E with the switch in the UP position.
    • If greater than 2 ohms, replace the driver window switch.
  15. Test for less than 2 ohms of resistance between the signal terminal A and the B+ circuit terminal E with the switch in the DOWN position.
  16. If greater than 2 ohms, replace the driver window switch.

Passenger Window Switch

  1. Ignition OFF, disconnect the harness connector at the appropriate passenger window switch.
  2. Test for infinite resistance between the signal terminals F and G and the B+ circuit terminal A with the switch in the INACTIVE position.
    • If less than infinite resistance, replace the appropriate passenger window switch.
  3. Test for less than 2 ohms of resistance between the signal terminal G and the B+ circuit terminal A with the switch in the UP position.
    • If greater than 2 ohms, replace the appropriate passenger window switch.
  4. Test for less than 2 ohms of resistance between the signal terminal F and the B+ circuit terminal A with the switch in the DOWN position.
    • If greater than 2 ohms, replace the appropriate passenger window switch.

Window Motor

  1. Install a 30-amp fused jumper wire between the control terminal A and 12 volts. Momentarily install a jumper wire between the control terminal B and ground. The appropriate window motor should perform the UP or DOWN function.
    • If the function does not perform as specified, replace the appropriate window motor.
  2. Reverse the jumper wires. The appropriate window motor should perform the DOWN or UP function.
    • If the function does not perform as specified, replace the appropriate window motor.
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