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 review the Power Windows Description and Operation?

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

Inspect for poor connections at the harness connector of the driver window switch. 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 driver window switch. Refer to Front Side Door Window Switch Replacement .

Did you complete the replacement?

Go to Step 5

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5

Operate the system in order to verify the repair.

Did you find and correct the condition?

System OK

Go to Step 2