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 battery voltage present?

Battery Voltage

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 battery voltage present?

Battery Voltage

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 battery voltage present?

Battery Voltage

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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