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. Turn the ignition switch to the RUN position.
  2. Place the rear window lockout switch in the OFF position.
  3. Backprobe the master window switch harness connector C1. Use the J 39200 Digital Multimeter (DMM) in order to measure the voltage between terminal D and ground.

Does the voltage equal the specified value?

B+

Go to Step 3

Go to Step 4

3

  1. Disconnect the left rear window switch.
  2. Use the J 39200 DMM in order to measure the voltage between terminal F of the left window switch and ground.

Does the voltage equal the specified value?

B+

Go to Step 5

Go to Step 6

4

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

Did you complete the repair?

--

Go to Power Windows System Check

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5

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

Did you complete the repair?

--

Go to Power Windows System Check

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6

Repair the open in CKT 1307 between the master window switch and the left rear window switch. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Power Windows System Check

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