GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Power Window Schematics

DEFINITION: This diagnostic procedure should be used to diagnosis a failure of the express down power window feature.

1

Did you perform the Power Door Systems Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Door Systems

2

  1. Turn ON the ignition with, the engine OFF.
  2. Depress the driver power window switch in the down position and hold it for approximately 1 second.
  3. Release the driver power window switch.

Does the driver power window continue down ward after the switch is released?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

Inspect for poor connections at the power window master switch harness connector. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 5

Go to Step 4

4

Replace the power window master switch. Refer to Power Accessory Switch Panel Replacement .

Did you complete the repair?

Go to Step 5

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5

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2