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3. Command the express down function of the driver door window by pressing down on the driver's window switch past the first detent and releasing. The driver's window should roll If the function does not perform as specified, replace the driver window switch. Circuit/System Testing Driver Power Window Inoperative 1. Ignition OFF, disconnect the X2 harness connector at the driver window switch. 2. Test for less than 1 ohm between the ground circuit terminal A and ground. If greater than the specified range, test the ground circuit for an open/high resistance. 3. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal H and ground. If the test lamp does not illuminate, test the B+ circuit for a short to ground or an 4. Connect the X2 harness connector at the driver window switch, disconnect the harness connector at the driver window motor. 5. Connect a test lamp between control circuit terminal A and control circuit terminal B. 6. Command the driver window UP and DOWN by using the driver window switch. The test lamp should illuminate when commanding the UP and DOWN states. If the test lamp is always OFF during either of the commands, test either control circuit If the test lamp is always ON, test either control circuit for a short to voltage. If the 7. If all circuits test normal, test or replace the driver window motor. Passenger Power Window Inoperative 1. Ignition OFF, disconnect the harness connector at the passenger window switch. 2. Test for less than 1 ohm between the ground circuit terminal F and ground. If greater than the specified range, test the ground circuit for an open/high resistance. 3. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal G and ground. If the test lamp does not illuminate, test the B+ circuit for a short to ground or an
2008 Chevrolet Silverado 1500 2008 ACCESSORIES & EQUIPMENT Fixed and Moveable Windows - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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