Test Description

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refers to the step numbers on the diagnostic table.

3: The passenger power window switch on the master switch, shares a common ground circuit with the left front window. If the passenger power window operates properly from the master switch the ground circuit can be presumed good.

Power Window Inoperative - Driver Door

Step	Action	Yes	No
Schematic Reference: Power Window Schematics
1	Did you perform the Door Systems Diagnostic System Check?	Go to Step 2	Go to Diagnostic System Check - Door Systems
2	Turn ON the ignition, with the engine OFF. Operate the driver power window from the master switch. Does the driver power window operate normally?	Go to TESTING FOR INTERMITTENT AND POOR CONNECTIONS	Go to Step 3
3	Disable the window lockout function (if equipped). Operate the passenger window(s) from the master switch. Do the passenger window(s) operate normally?	Go to Step 4	Go to Step 13
4	Disconnect the power window master switch. Connect a test lamp between the RAP fuse supply voltage circuit at the master switch connector and a good ground. Does the test lamp illuminate?	Go to Step 5	Go to Step 15
5	Connect the power window master switch. Disconnect the driver power window motor. Connect a test lamp between the power window motor left front up circuit at the power window motor connector and a good ground. Operate the driver power window in the up direction. Does the test lamp illuminate?	Go to Step 6	Go to Step 8
6	Connect a test lamp between the power window motor left front down circuit at the power window motor connector and a good ground. Operate the driver power window in the down direction. Does the test lamp illuminate?	Go to Step 7	Go to Step 9
7	Connect a test lamp between the power window motor left front up and down circuits at the power window motor connector. Operate the left front power window in the up and down directions. Does the test lamp illuminate in both directions?	Go to Step 11	Go to Step 10
8	Test the power window left front up circuit for a short to ground, open or high resistance. Refer to CIRCUIT TESTING and WIRING REPAIRS . Did you find and correct the condition?	Go to Step 16	Go to Step 10
9	Test the power window left front down circuit for a short to ground, open or high resistance. Refer to CIRCUIT TESTING and WIRING REPAIRS . Did you find and correct the condition?	Go to Step 16	Go to Step 10
10	Inspect for poor connections at the power window master switch harness connector. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS and CONNECTOR REPAIRS . Did you find and correct the condition?	Go to Step 16	Go to Step 12
11	Inspect for poor connections at the power window motor harness connector. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS and CONNECTOR REPAIRS . Did you find and correct the condition?	Go to Step 16	Go to Step 14
12	Replace the power window master switch. Refer to Power Window Switch Replacement . Did you complete the repair?	Go to Step 16	-
13	Locate and repair a loose connection or an open in the left power window switch ground circuit. Refer to CIRCUIT TESTING and WIRING REPAIRS . Did you complete the repair?	Go to Step 16	-
14	Replace the left front power window motor. Refer to Window Regulator Motor Replacement - Front Door . Did you complete the repair?	Go to Step 16	-
15	Locate and repair a loose connection, open or short to ground in the fused RAP relay output circuit. Refer to CIRCUIT TESTING and WIRING REPAIRS . Did you complete the repair?	Go to Step 16	-
16	Operate the system in order to verify the repair. Did you correct the condition?	System OK	Go to Step 3