GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Power Windows System Check?

--

Go to Step 2

Go to Power Windows System Check

2

  1. Disconnect the inoperative window switch connector.
  2. Turn the ignition switch to the ON position.
  3. Use a J 39200 digital multimeter (DMM) in order to backprobe between terminal H and B+.

Is the voltage within the specified range?

10-15 V

Go to Step 6

Go to Step 3

3

Test for an open in CKT 167 (TAN).

Is the circuit OK?

--

Go to Step 5

Go to Step 4

4

Repair the open in CKT 167 (TAN). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Windows System Check

--

5

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

Is the repair complete?

--

Go to Power Windows System Check

--

6

With the J 39200 DMM in the same place, press and hold the inoperative window DOWN switch on the left front power window switch. Is the voltage within the specified range?

10-15 V

Go to Step 7

Go to Step 9

7

Test for a short to ground in CKT 167 (TAN).

Is the circuit OK?

--

Go to Step 12

Go to Step 8

8

Repair the short to ground in CKT 167 (TAN). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Windows System Check

--

9

Connect a J 39200 DMM between terminal D and B+ of the inoperative window switch harness.

Is the voltage within the specified range?

10-15 V

Go to Step 12

Go to Step 10

10

Test for an open in CKT 166 (LT BLU).

Is the circuit OK?

--

Go to Step 5

Go to Step 11

11

Repair the open in CKT 166 (LT BLU). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Windows System Check

--

12

With the J 39200 DMM in the same place, press and hold the inoperative window UP switch on the left front power window switch.

Is the voltage within the specified range?

10-15 V

Go to Step 13

Go to Step 15

13

Test for a short to ground in CKT 166 (LT BLU).

Is the circuit OK?

--

Go to Step 5

Go to Step 14

14

Repair the short to ground in CKT 166 (LT BLU). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Windows System Check

--

15

Connect a J 39200 DMM between terminal F of the inoperative window switch harness connector and ground.

Is the voltage within the specified range?

10-15 V

Go to Step 17

Go to Step 16

16

Repair the open or short to ground in CKT 70 (PNK). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Windows System Check

--

17

  1. Reconnect the inoperative window switch connector.
  2. Disconnect the inoperative window motor.
  3. Connect a J 39200 DMM to terminal A and terminal B of the inoperative window motor harness connector.
  4. Press the inoperative window switch to the UP and to the DOWN positions.

Is the voltage within the specified range?

10-15 V

Go to Step 18

Go to Step 19

18

Replace the inoperative power window motor. Refer to Door Window Regulator Motor Replacement .

Is the repair complete?

--

Go to Power Windows System Check

--

19

  1. Disconnect the inoperative window switch connector.
  2. Test for an open or short to ground in CKT 667 (BRN).

Is the circuit OK?

--

Go to Step 21

Go to Step 20

20

Repair the open or short to ground in CKT 667 (BRN). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Windows System Check

--

21

Test for an open or short to ground in CKT 666 (DK BLU).

Is the circuit OK?

--

Go to Step 23

Go to Step 22

22

Repair the open or short to ground in CKT 666 (DK BLU). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Windows System Check

--

23

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

Is the repair complete?

--

Go to Power Windows System Check

--