GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1998 🢒 Grand Prix 🢒 Body and Accessories 🢒 Doors 🢒 Power Windows Inoperative - All

Power Windows Inoperative - All 2 Door

Step

Action

Value(s)

Yes

No

1

Inspect the power window circuit breaker for an open.

Is the circuit breaker open?

--

Go to Step 7

Go to Step 2

2
  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 light illuminate?

--

Go to Step 3

Go to Step 6

3

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

Does the test light illuminate?

--

Go to Step 4

Go to Step 5

4

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

Is the repair complete?

--

System OK

--

5

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

Is the repair complete?

--

System OK

--

6

Repair the poor connection or the open in circuit 143.

Is the repair complete?

--

System OK

--

7

Repair the short to ground in circuit 143.

Is the repair complete?

--

System OK

--

Power Windows Inoperative - All 4 Door

Step

Action

Value(s)

Yes

No

1

Inspect the PWR WDO circuit breaker for an open.

Is the circuit breaker open?

--

Go to Step 7

Go to Step 2

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

Does the test lamp light?

--

Go to Step 3

Go to Step 6

3

Use a test lamp 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 4

Go to Step 5

4
  1. Replace the left front window switch. Refer to Front Door Switch Replacement .
  2. Inspect the system.

Is the repair complete?

--

System OK

--

5
  1. Repair the poor connection or the open in CKT 750 between the left front window switch harness connector C1 terminal A and G301.
  2. Inspect the system.

Is the repair complete?

--

System OK

--

6
  1. Repair the poor connection or the open in CKT 143.
  2. Inspect the system.

Is the repair complete?

--

System OK

--

7
  1. Repair a short to ground in CKT 143.
  2. Inspect the system.

Is the repair complete?

--

System OK

--