GM Service Manual Online
For 1990-2009 cars only

Step

Action

Values

Yes

No

1

Did you perform the Diagnostic System Check - Vehicle?

--

Go to Step 2

Go to Diagnostic System Check - Vehicle

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 - Fixed and Moveable Windows

3

Replace the driver power window switch.

Is the repair complete?

--

Go to Step 4

--

4

Operate the system to verify the repair.

Did you correct the condition?

--

System OK

Go to Step 2