GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Did you review the Power Windows Description and the Power Windows Circuit Description operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Doors

2

Verify that the express mode is inoperative and that the other window functions work correctly.

Is only the express mode inoperative?

Go to Step 3

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

3

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

Is the repair complete?

Go to Step 4

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4

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3