GM Service Manual Online
For 1990-2009 cars only

Power Windows Inoperative - One Left Front

Step

Action

Yes

No

Schematic Reference: Power Window Schematics

1

Did you review the Power Door Locks Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Doors

2

  1. Turn ON the ignition, with the engine OFF.
  2. Operate the LF window switch to the UP and DOWN positions.

Does the window operate normally?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

  1. Disconnect the LH window/door lock switch.
  2. Connect a fused jumper wire to cavity 4 of the connector.
  3. Depending on the window's position attach the other end of the jumper wire to one of the following positions:
  4. • Cavity 5, if the window is down.
    • Cavity 1, if the window is up.
  5. Connect a second fused jumper wire to cavity 10 of the connector.
  6. Depending on the window's position, connect the other end of the jumper wire to one of the following positions:
  7. • Cavity 1, if the window is down.
    • Cavity 5, If the window is up.
    • Turn ON the ignition, with the engine OFF.

Did the window move?

Go to Step 5

Go to Step 4

4

Test both the GRN and the YEL wire between the LH Front window motor and the LH window/door lock switch for a high resistance or an open.

Did either circuit have an open?

Go to Step 7

Go to Step 6

5

Inspect for poor connections at the harness connector of the LH window/door lock switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 10

Go to Step 8

6

Inspect for poor connections at the harness connector of the LH front window motor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 10

Go to Step 9

7

Repair the open in the wire. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to Step 10

--

8

Replace the LH window/door lock switch. Refer to Front Side Door Window Switch Replacement .

Is the repair complete?

Go to Step 10

--

9

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

Is the repair complete?

Go to Step 10

--

10

Operate the system to verify the repair.

Did you correct the condition?

System OK

Go to Step 3

Power Windows Inoperative - One Left Rear

Step

Action

Yes

No

Schematic Reference: Power Window Schematics

1

Did you review the Power Door Locks Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Doors

2

  1. Turn ON the ignition, with the engine OFF.
  2. Operate the LH rear window switch to the UP and DOWN positions.

Does the window operate normally?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

  1. Disconnect the LH rear window switch.
  2. Turn ON the ignition, with the engine OFF.
  3. Using a test lamp, probe cavity 4 of the connector.

Does the test lamp illuminate?

Go to Step 4

Go to Step 15

4

  1. Turn OFF the ignition.
  2. Disconnect the LH window/door lock switch connector.
  3. Test for a high resistance or an open between cavity 2 of the LH rear door connector and cavity 12 of the LH front door connector.

Does the circuit have an open condition?

Go to Step 14

Go to Step 5

5

Test for a high resistance or an open between cavity 5 of the LH rear door connector and cavity 9 of the LH window/door connector.

Does the circuit have an open condition?

Go to Step 13

Go to Step 6

6

  1. Reconnect the left door connector.
  2. Turn ON the ignition, with the engine OFF.
  3. Using a test lamp, probe cavity 2 of the LH rear door connector to ground and activate the left door switch to the window DOWN position.
  4. Using a test lamp, probe cavity 5 of the LH rear door connector to ground and activate the left door switch to the window UP position.

Does the test lamp illuminate in each case?

Go to Step 7

Go to Step 10

7

  1. Reconnect the LH rear window switch.
  2. Using a test lamp, backprobe cavity 1 of the LH rear window switch connector to ground and activate the LH rear window switch from the LH front window/door lock switch to the DOWN position.
  3. Using a test lamp, backprobe cavity 3 of the LH rear window switch connector to ground and activate the LH rear window switch from the LH front window/door lock switch to the UP position.

Does the test lamp illuminate in each case?

Go to Step 8

Go to Step 9

8

  1. Using a test lamp, backprobe cavity 1 of the LH rear door motor connector to ground and activate the LH rear door switch to the DOWN position.
  2. Using a test lamp, backprobe cavity 2 of the LH rear door motor connector to ground and activate the LH rear door switch to the UP position.

Does the test lamp illuminate in each case?

Go to Step 11

Go to Step 12

9

Inspect for poor connections at the harness connector of the LH rear window switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 19

Go to Step 16

10

Inspect for poor connections at the harness connector of the LH front window/door lock switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 19

Go to Step 17

11

Inspect for poor connections at the harness connector of the LH rear window motor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 19

Go to Step 18

12

Repair the open in the control circuit between the switch and the motor. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to Step 19

--

13

Repair the open in the RED/GRN wire between the LH front and LH rear door switches. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to Step 19

--

14

Repair the open in the BLU/BLK wire between the LH front and LH rear door switches. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to Step 19

--

15

Repair the open in the BLK wire from the connector or replace SP252, as needed. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to Step 19

--

16

Replace the LH rear window switch. Refer to Rear Side Door Window Switch Replacement .

Is the repair complete?

Go to Step 19

--

17

Replace the LH front window/door lock switch. Refer to Front Side Door Window Switch Replacement .

Is the repair complete?

Go to Step 19

--

18

Replace the LH rear window motor. Refer to Rear Side Door Window Regulator Replacement .

Is the repair complete?

Go to Step 19

--

19

Operate the system to verify the repair.

Did you correct the condition?

System OK

Go to Step 3

Power Windows Inoperative - One Right Front

Step

Action

Yes

No

Schematic Reference: Power Window Schematics

1

Did you review the Power Door Locks Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Doors

2

  1. Turn ON the ignition, with the engine OFF.
  2. Operate the RF window switch to the UP and DOWN positions.

Does the window operate normally?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

  1. Disconnect the RH front window switch.
  2. Turn ON the ignition, with the engine OFF.
  3. Using a test lamp, probe cavity 4 of the connector.

Does the test lamp illuminate?

Go to Step 4

Go to Step 15

4

  1. Turn the ignition OFF.
  2. Disconnect the LH window/door lock switch connector.
  3. Test for a high resistance or an open between cavity 2 of the RH front door connector and cavity 6 of the LH front door connector.

Does the circuit have an open condition?

Go to Step 14

Go to Step 5

5

Test for a high resistance or an open between cavity 5 of the RH front door connector and cavity 14 of the LH window/door connector.

Does the circuit have an open condition?

Go to Step 13

Go to Step 6

6

  1. Reconnect the left door connector.
  2. Turn ON the ignition, with the engine OFF.
  3. Using a test lamp, probe cavity 2 of the right door connector to ground and activate the left door switch to the window DOWN position.
  4. Using a test lamp, probe cavity 5 of the right door connector to ground and activate the left door switch to the window UP position.

Does the test lamp illuminate in each case?

Go to Step 7

Go to Step 10

7

  1. Reconnect the RH front window switch.
  2. Using a test lamp, backprobe cavity 1 of the RH front window switch connector to ground and activate the RH front window switch from the LH window/door lock switch to the DOWN position.
  3. Using a test lamp, backprobe cavity 3 of the RH front window switch connector to ground and activate the RH front window switch from the LH window/door lock switch to the UP position.

Does the test lamp illuminate in each case?

Go to Step 8

Go to Step 9

8

  1. Using a test lamp, backprobe cavity 1 of the RH front door motor connector to ground and activate the RH front door switch to the DOWN position.
  2. Using a test lamp, backprobe cavity 2 of the RH front door motor connector to ground and activate the RH front door switch to the UP position.

Does the test lamp illuminate in each case?

Go to Step 11

Go to Step 12

9

Inspect for poor connections at the harness connector of the RH front window switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 19

Go to Step 16

10

Inspect for poor connections at the harness connector of the LH front window/door lock switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 19

Go to Step 17

11

Inspect for poor connections at the harness connector of the RH front window motor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 19

Go to Step 18

12

Repair the open in the control circuit between the switch and the motor. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to Step 19

--

13

Repair the open in the GRN/RED wire between the left and right door switches. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to Step 19

--

14

Repair the open in the BLU/WHT wire between the right and left door switches. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to Step 19

--

15

Repair the open in the BLK wire from the connector or replace SP252, as needed. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to Step 19

--

16

Replace the RH front window switch. Refer to Front Side Door Window Switch Replacement - Right Side .

Is the repair complete?

Go to Step 19

--

17

Replace the LH window/door lock switch. Refer to Front Side Door Window Switch Replacement .

Is the repair complete?

Go to Step 19

--

18

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

Is the repair complete?

Go to Step 19

--

19

Operate the system to verify the repair.

Did you correct the condition?

System OK

Go to Step 3

Power Windows Inoperative - One Right Rear

Step

Action

Yes

No

Schematic Reference: Power Window Schematics

1

Did you review the Power Door Locks Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Doors

2

  1. Turn ON the ignition, with the engine OFF.
  2. Operate the RH rear window switch to the UP and DOWN positions.

Does the window operate normally?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

  1. Disconnect the RH rear window switch.
  2. Turn ON the ignition, with the engine OFF.
  3. Using a test lamp, probe cavity 4 of the connector.

Does the test lamp illuminate?

Go to Step 4

Go to Step 15

4

  1. Turn OFF the ignition.
  2. Disconnect the RH window/door lock switch connector.
  3. Test for a high resistance or an open between cavity 2 of the RH rear door connector and cavity 13 of the LH front door connector.

Does the circuit have an open condition?

Go to Step 14

Go to Step 5

5

Test for a high resistance or an open between cavity 5 of the RH rear door connector and cavity 8 of the LH window/door connector.

Does the circuit have an open condition?

Go to Step 13

Go to Step 6

6

  1. Reconnect the left door connector.
  2. Turn ON the ignition, with the engine OFF.
  3. Using a test lamp, probe cavity 2 of the RH rear door connector to ground and activate the left front door switch to the window DOWN position.
  4. Using a test lamp, probe cavity 5 of the RH rear door connector to ground and activate the left front door switch to the window UP position.

Does the test lamp illuminate in each case?

Go to Step 7

Go to Step 10

7

  1. Reconnect the RH rear window switch.
  2. Using a test lamp, backprobe cavity 1 of the RH rear window switch connector to ground and activate the RH rear window switch from the LH front window/door lock switch to the DOWN position.
  3. Using a test lamp, backprobe cavity 3 of the RH rear window switch connector to ground and activate the RH rear window switch from the LH front window/door lock switch to the UP position.

Does the test lamp illuminate in each case?

Go to Step 8

Go to Step 9

8

  1. Using a test lamp, backprobe cavity 1 of the RH rear door motor connector to ground and activate the RH rear door switch to the DOWN position.
  2. Using a test lamp, backprobe cavity 2 of the RH rear door motor connector to ground and activate the RH rear door switch to the UP position.

Does the test lamp illuminate in each case?

Go to Step 11

Go to Step 12

9

Inspect for poor connections at the harness connector of the RH rear window switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 19

Go to Step 16

10

Inspect for poor connections at the harness connector of the LH front window/door lock switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 19

Go to Step 17

11

Inspect for poor connections at the harness connector of the RH rear window motor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 19

Go to Step 18

12

Repair the open in the control circuit between the switch and the motor. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to Step 19

--

13

Repair the open in the RED/BLK wire between the LH front and RH rear door switches. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to Step 19

--

14

Repair the open in the BLU/RED wire between the LH front and RH rear door switches. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to Step 19

--

15

Repair the open in the BLK wire from the connector or replace SP252, as needed. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to Step 19

--

16

Replace the RH rear window switch. Refer to Rear Side Door Window Switch Replacement .

Is the repair complete?

Go to Step 19

--

17

Replace the LH front window/door lock switch. Refer to Front Side Door Window Switch Replacement .

Is the repair complete?

Go to Step 19

--

18

Replace the RH rear window motor. Refer to Rear Side Door Window Regulator Replacement .

Is the repair complete?

Go to Step 19

--

19

Operate the system to verify the repair.

Did you correct the condition?

System OK

Go to Step 3