Power Windows Inoperative - Lockout Function

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.

Step	Action	Yes	No
Schematic Reference: Power Window Schematics
1	Did you perform the Power 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. Enable the window lockout function. Operate the passenger power windows from the passenger door power window switches. Do the passenger power windows operate UP and DOWN?	Go to Step 3	Go to TESTING FOR INTERMITTENT AND POOR CONNECTIONS
3	Check the master switch lockout signal circuit for a short to ground. Refer to CIRCUIT TESTING and WIRING REPAIRS . Did you find and correct the condition?	Go to Step 6	Go to Step 4
4	Inspect for poor connections at the harness connector of the master power window switch. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS and CONNECTOR REPAIRS . Did you find and correct the condition?	Go to Step 6	Go to Step 5
5	Replace the master power window switch. Refer to Power Accessory Switch Panel Replacement . Did you complete the repair?	Go to Step 6	-
6	Operate the system in order to verify the repair. Did you correct the condition?	System OK	Go to Step 2