GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you review the power window circuit description and operation and perform the necessary inspections?

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Go to Step 2

Go to Symptoms

2

Verify the fault is present.

Does the system operate normally?

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Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

  1. Disconnect the left front power side window switch connector.
  2. Disconnect the right front power side window switch connector.
  3. Connect a J 39200 digital multimeter between the left front power side window switch connector, cavity F, and the right front power side window switch connector, cavity D for CKT 166 (LT BLU).

Is continuity present?

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Go to Step 4

Go to Step 7

4

Connect a J 39200 digital multimeter between the left front power side window switch connector, cavity B and the right front power side window switch connector, cavity H for CKT 167 (TAN).

Is continuity present?

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Go to Step 5

Go to Step 8

5

  1. Disconnect the right front power window regulator motor connector.
  2. Connect a J 39200 digital multimeter between the right front power side window switch connector, cavity A, and the right front power window regulator motor connector, cavity B for CKT 667 (BRN).

Is continuity present?

--

Go to Step 6

Go to Step 9

6

Connect a J 39200 digital multimeter between the right front power side window switch connector, cavity E, and the right front power window regulator motor connector, cavity A for CKT 666 (DK BLU).

Is continuity present?

--

Go to Step 10

Go to Step 11

7

Repair the open in CKT 166 (LT BLU) between the left front power side window switch connector and the right front power side window switch connector.

Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

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Go to Step 12

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8

Repair the open in CKT 167 (TAN) between the left front power side window switch connector and the right front power side window switch connector.

Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Step 12

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9

Repair the open in CKT 667 (TAN) between the right front power side window switch connector and the right front power window regulator motor connector.

Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Step 12

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10

  1. Ensure that the mechanical assembly for the window drive is not binding the operation of the regulator motor.
  2. If the mechanical assembly is operating correctly, replace the right front power side window regulator motor.

Refer to Power Window Motor Replacement .

Is the repair complete?

--

Go to Step 12

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11

Repair the open in CKT 666 (DK BLU) between the right front power side window switch connector and the right front power window regulator motor connector.

Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

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Go to Step 12

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12

Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step 3