GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Power Windows System Check performed?

--

Go to Step 2

Go to Power Windows System Check

2

  1. Disconnect the left front door power side window switch connector.
  2. Disconnect the left front door power window regulator motor connector.
  3. Connect a J 39200 between the left front door power side window switch connector, cavity E, and the left front door power window regulator motor connector, cavity A for CKT 164 (DK BLU).

Is continuity present?

--

Go to Step 3

Go to Step 9

3

Connect a J 39200 between the left front door power side window switch connector, cavity A, and the left front door power window regulator motor connector, cavity B for CKT 165 (BRN).

Is continuity present?

--

Go to Step 4

Go to Step 10

4

Connect a J 39200 between pin E, and pin G of the left front door power side window switch.

Is continuity present?

--

Go to Step 5

Go to Step 11

5

Connect a J 39200 between pin A, and pin G of the left front door power side window switch.

Is continuity present?

--

Go to Step 6

Go to Step 11

6

  1. Connect an unpowered test lamp between the left front door power side window switch connector, cavity H, and ground.
  2. Place the ignition switch in the ACCY position.

Does the test lamp light?

--

Go to Step 7

Go to Step 12

7

  1. Reconnect the left front door power side window switch connector.
  2. Connect an unpowered test lamp between the left front door power window regulator motor connector, cavity A, and ground.
  3. Depress the UP pushbutton for the left front door power window regulator motor at the left front door power side window switch.

Does the test lamp light?

--

Go to Step 8

Go to Step 11

8

  1. Connect an unpowered test lamp between the left front door power window regulator motor connector, cavity B, and ground.
  2. Depress the DOWN pushbutton for the left front door power window regulator motor at the left front door power side window switch.

Does the test lamp light?

--

Go to Step 13

Go to Step 11

9

Repair the open in CKT 164 (DK BLU) between the left front door power side window switch and the left front door power window regulator motor.

Refer to Wiring Repairs

Is the repair complete?

--

Go to Power Windows System Check

--

10

Repair the open in CKT 165 (BRN) between the left front door power side window switch and the left front door power window regulator motor.

Refer to Wiring Repairs

Is the repair complete?

--

Go to Power Windows System Check

--

11

Replace the left front door power side window switch.

Refer to Front Side Door Window Switch Replacement

Is the repair complete?

--

Go to Power Windows System Check

--

12

Repair the open in CKT 343 (YEL) between splice S229 and the left front door power side window switch.

Refer to Wiring Repairs

Is the repair complete?

--

Go to Power Windows System Check

--

13

  1. Ensure that the mechanical assembly for the window drive is not binding the operation of the regulator motor.
  2. Replace the left front door power side window regulator motor.

Refer to Power Window Motor Replacement

Is the repair complete?

--

Go to Power Windows System Check

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