GM Service Manual Online
For 1990-2009 cars only

Power Windows Inoperative - All 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

Inspect the power window circuit breaker for an open.

Is the circuit breaker open?

--

Go to Step 8

Go to Step 3

3

  1. Disconnect the left front window switch.
  2. Turn the ignition switch to the RUN position.
  3. Use a test light in order to backprobe between the left front window switch harness connector terminal H and ground.

Does the test lamp light?

--

Go to Step 4

Go to Step 7

4

Use a test light in order to backprobe between the left front window switch harness connector terminal H to terminal G

Does the test lamp light?

--

Go to Step 5

Go to Step 6

5

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

Did you repeat the repair and test the system?

--

Go to Power Windows System Check

--

6

Repair the poor connection or the open in circuit 750 between the left front window switch harness connector terminal G and G301.

Did you repeat the repair and test the system?

--

Go to Power Windows System Check

--

7

Repair the poor connection or the open in circuit 143.

Did you repeat the repair and test the system?

--

Go to Power Windows System Check

--

8

Repair the short to ground in circuit 143.

Did you repeat the repair and test the system?

--

Go to Power Windows System Check

--

Power Windows Inoperative - All 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

Inspect the PWR WDO circuit breaker for an open.

Is the circuit breaker open?

--

Go to Step 8

Go to Step 3

3

  1. Disconnect the left front window switch.
  2. Turn the ignition switch to the RUN position.
  3. Use a test light in order to backprobe between the left front window switch harness connector terminal C and ground.

Does the test lamp light?

--

Go to Step 4

Go to Step 7

4

Use a test light in order to backprobe between the left front window switch harness connector C1 terminal C to terminal A.

Does the test lamp light?

--

Go to Step 5

Go to Step 6

5

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

Did you complete the repair and test the system?

--

Go to Power Windows System Check

--

6

Repair the poor connection or the open in circuit 750 between the left front window switch harness connector C1 terminal A and G301.

Did you complete the repair and test the system?

--

Go to Power Windows System Check

--

7

Repair the poor connection or the open in circuit 143.

Did you complete the repair and test the system?

--

Go to Power Windows System Check

--

8

Repair a short to ground in circuit 143.

Did you complete the repair and test the system?

--

Go to Power Windows System Check

--