GM Service Manual Online
For 1990-2009 cars only

Power Window Inoperative - Left Side 2 Door

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. Turn the ignition switch to the RUN position.
  2. Backprobe the master window switch harness connector. Use the J 39200 Digital Multimeter (DMM) in order to measure the voltage between terminal A and ground.
  3. Place the left front window switch in the DOWN position.

Does the voltage equal the specified value?

B+

Go to Step 3

Go to Step 5

3

  1. Backprobe the master window switch harness connector. Use the J 39200 DMM in order to measure the voltage between terminal E and ground.
  2. Place the left front window switch in the UP position.

Does the voltage equal the specified value?

B+

Go to Step 4

Go to Step 5

4

  1. Disconnect the left front window motor.
  2. Use the J 39200 DMM in order to measure the voltage between terminal A of the left front window harness connector and ground.
  3. Place the left front window switch in the DOWN position.

Does the voltage equal the specified value?

B+

Go to Step 6

Go to Step 7

5

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

Did you complete the repair?

--

Go to Power Windows System Check

--

6

  1. Use the J 39200 DMM in order to measure the voltage between terminal B of the left front window harness connector and ground.
  2. Place the left front window switch in the UP position.

Does the voltage equal the specified value?

B+

Go to Step 8

Go to Step 9

7

Repair the open in CKT 165 between the master window switch and the left front window motor. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Power Windows System Check

--

8

Replace the left front window motor. Refer to Front Side Door Window Regulator Replacement .

Did you complete the repair?

--

Go to Power Windows System Check

--

9

Repair the open in CKT 164 between the master window switch and the left front window motor. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Power Windows System Check

--

Power Window Inoperative - Left Side 4 Door

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. Turn the ignition switch to the RUN position.
  2. Backprobe the master window switch harness connector C1. Use the J 39200 Digital Multimeter (DMM) in order to measure the voltage between terminal B and ground.
  3. Place the left front window switch in the DOWN position.

Does the voltage equal the specified value?

B+

Go to Step 3

Go to Step 5

3

  1. Backprobe the master window switch harness connector C1. Use the J 39200 DMM in order to measure the voltage between terminal F and ground.
  2. Place the left front window switch in the UP position.

Does the voltage equal the specified value?

B+

Go to Step 4

Go to Step 5

4

  1. Disconnect the left front window motor.
  2. Use the J 39200 DMM in order to measure the voltage between terminal A of the left front window harness connector and ground.
  3. Place the left front window switch in the DOWN position.

Does the voltage equal the specified value?

B+

Go to Step 6

Go to Step 7

5

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

Did you complete the repair?

--

Go to Power Windows System Check

--

6

  1. Use the J 39200 DMM in order to measure the voltage between terminal B of the left front window harness connector and ground.
  2. Place the left front window switch in the UP position.

Does the voltage equal the specified value?

B+

Go to Step 8

Go to Step 9

7

Repair the open in CKT 165 between the master window switch and the left front window motor. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Power Windows System Check

--

8

Replace the left front window motor. Refer to Front Side Door Window Regulator Replacement .

Did you complete the repair?

--

Go to Power Windows System Check

--

9

Repair the open in CKT 164 between the master window switch and the left front window motor. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Power Windows System Check

--