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 power window control module.
  2. Place the ignition switch in the RUN position.
  3. Measure voltage at the power window control module from terminal A to ground.

Does the voltage measure within the specified range?

10-15 V

Go to Step 3

Go to Step 4

3

  1. Measure the voltage at the power window control module connector terminal B (GRY) and terminal C (DK BLU).
  2. Press the left front window UP at the LH front power window switch.
  3. Press the left front window DOWN switch at the LH front power window switch.

Does the voltage measure within the specified range?

10-15 V

Go to Step 5

Go to Step 6

4

Repair the open in CKT 141.

Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Windows System Check

--

5

  1. Disconnect the LH front power window motor connector.
  2. Measure voltage at the LH front power window motor connector terminal A (DK BLU) and ground.
  3. Press the left front window UP switch at the LH front power window switch.

Does the voltage measure within the specified range?

10-15 V

Go to Step 9

Go to Step 10

6

  1. Test for an open in CKT 164 from terminal C of the LH front power window switch to terminal C at the power window control module connector.
  2. Test for an open in CKT 1136.

Is there an open in CKT 1136 or CKT 164?

--

Go to Step 7

Go to Step 8

7

Repair CKT 1136 or CKT 164 for an open.

Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Windows System Check

--

8

Replace the LH front power window switch.

Refer to one of the following procedures:

Is the repair complete?

--

Go to Power Windows System Check

--

9

  1. Reconnect the LH front power window motor connector.
  2. Connect a fused jumper between the power window control module terminal A and terminal D.

Does the LH front window motor run?

--

Go to Step 11

Go to Step 12

10

Repair the open CKT 164 between S500 and terminal A (DK BLU) of the LH front power window motor connector.

Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Windows System Check

--

11

  1. Connect a fuse jumper between the power window control module terminal D (CKT 185) and ground.
  2. Press the left front window UP switch at the LH front power window switch.

Does the LH front power window motor run?

--

Go to Step 15

Go to Step 14

12

Test CKT 185 for an open.

Is there an open in CKT 185?

--

Go to Step 13

Go to Step 14

13

Repair CKT 185 for an open.

Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Windows System Check

--

14

Replace the LH front power window motor.

Refer to Power Window Motor Replacement .

Is the repair complete?

--

Go to Power Windows System Check

--

15

Replace the power window control module.

Refer to Door Control Module Replacement .

Is the repair complete?

--

Go to Power Windows System Check

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