GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Power Window Schematics

Connector End View Reference: Power Door Systems Connector End Views

1

Did you perform the Diagnostic System Check for the door systems?

Go to Step 2

Go to Diagnostic System Check - Door Systems

2

Operate the driver window.

Does the window operate normally with the exception of the express down function?

Go to Step 3

Go to Symptoms - Doors

3

Replace the master window switch. Refer to Front Side Door Window Switch Replacement .

Is the repair complete?

Go to Step 4

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4

Operate the system to verify the repair.

Did you correct the condition?

System OK

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