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. Access the left door lock and side window switch.
  2. Turn the ignition switch to the RUN position.
  3. Connect a J 39200 digital multimeter (DMM) to ground and CKT 1001 (DK GRN), terminal L at the left door lock and side window switch connector C1.
  4. Ensure that the connector C1 remains connected.
  5. Test for voltage.

Is ignition voltage present?

IGN+

Go to Step 4

Go to Step 3

3

Repair the open or high resistance in CKT 1001 (DK GRN) between the power window circuit breaker and the left door lock and side window switch.

Is the repair complete?

--

Go to Power Windows System Check

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4

  1. Turn the ignition switch to the RUN position.
  2. Connect a J 39200 DMM to CKT 1001 (DK GRN), terminal L at the left door lock and side window switch connector C1 and CKT 1850 (BLK), terminal C at the left door lock and side window switch connector C2.
  3. Test for voltage.

Is ignition voltage present?

IGN+

Go to Step 6

Go to Step 5

5

Repair the open or high resistance in CKT 1850 (BLK) between the left door lock and side window switch connector C2 and G202.

Is the repair complete?

--

Go to Power Windows System Check

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6

  1. Turn the ignition switch to the RUN position.
  2. Connect a J 39200 DMM to CKT 164 (BLU), terminal A and CKT 165 (BRN), terminal E at the left door lock and side window switch connector C2.
  3. Ensure that the connector C2 remains connected.
  4. Operate the left side window regulator switch in the UP/DOWN position.
  5. Test for voltage.

Is ignition voltage present?

IGN+

Go to Step 7

Go to Step 8

7

Perform the Power Windows System Check for each window in order to repair the open or high resistance in four window circuits.

Is the repair complete?

--

Go to Power Windows System Check

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8

Replace the left door and side window switch.

Is the repair complete?

--

Go to Power Windows System Check

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