GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Power Window Schematics

Connector End View Reference: Power Door Systems Connector End Views

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

2

Verify that the inoperative driver door power window fault is present.

Does the driver door power window operate normally?

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

Go to Step 3

3

Are the driver door, left rear (LR) and right rear (RR) windows all inoperative?

Go to Power Windows Inoperative - All

Go to Step 4

4

  1. Disconnect the driver window motor harness connector.
  2. Turn ON the ignition, with the engine OFF.
  3. Probe the power window motor left front up control circuit of the harness with a test lamp that is connected to ground.
  4. Operate the driver window switch to the UP position.

Does the test lamp illuminate?

Go to Step 5

Go to Step 6

5

  1. Connect a test lamp between the power window motor left front up control circuit of the harness connector and the power window motor left front down control circuit of the harness connector.
  2. Operate the driver window switch to the DOWN position.

Does the test lamp illuminate?

Go to Step 8

Go to Step 7

6

Test the power window motor left front up control circuit of the driver window motor for an open or a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 12

Go to Step 9

7

Test the power window motor left front down control circuit of the driver window motor for an open or a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 12

Go to Step 9

8

Inspect for poor connections at the harness connector of the driver 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 12

Go to Step 10

9

Inspect for poor connections at the harness connector of the driver 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 12

Go to Step 11

10

Replace the driver window motor. Refer to Front Side Door Window Regulator Motor Replacement .

Did you complete the repair?

Go to Step 12

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11

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

Did you complete the repair?

Go to Step 12

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12

Operate the system in order to verify the repair.

Did you find and correct the condition?

System OK

Go to Step 2