GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Power Windows System Check?

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Go to Step 2

Go to Power Windows System Check

2

  1. Disconnect the LH front power window switch connector.
  2. Place the ignition switch in the RUN position.
  3. Use a digital multimeter (DMM) in order to backprobe the LH front power window switch from terminal F to ground.

Does the voltage measure within the specified range?

10-15 V

Go to Step 3

Go to Step 6

3

Use a DMM in order to backprobe the LH front power window switch from terminal F to terminal E.

Does the voltage measure within the specified range?

10-15 V

Go to Step 5

Go to Step 4

4

Repair the open in CKT 1250.

Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Windows System Check

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5

Replace the LH front power window switch.

Refer to one of the following procedures:

Is the repair complete?

--

Go to Power Windows System Check

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6

Repair the open in CKT 141.

Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Windows System Check

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