GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Power Window Schematics

1

Did you review the Power Window Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Doors

2

Verify that the inoperative power windows express down function fault is present.

Does the power windows express down function operate normally?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

3

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

Did you complete the replacement?

Go to Step 4

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4

Operate the system in order to verify the repair.

Did you find and correct the condition?

System OK

Go to Step 2