GM Service Manual Online
For 1990-2009 cars only

Diagnostic Aids

If the power window fuse is open the cause could be one of the following:

    • A short to ground in the accessory voltage circuit
    • A short to ground in any of the power window motor up and down signal or control circuits
    • A short to ground in the window lockout control circuit

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

Operate all power windows from all power window switches.

Did all the power windows operate from all power window switches correctly?

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

Go to Step 3

3

Did any power window operate from any power window switch?

Go to Symptoms - Doors

Go to Step 4

4

  1. Disconnect the driver power window switch.
  2. Turn ON the ignition, with the engine OFF.
  3. Connect a test lamp to a good ground.
  4. Probe the accessory voltage circuit at the driver window switch harness connector.

Does the test lamp illuminate?

Go to Step 5

Go to Step 7

5

With the ignition still ON, connect the test lamp between the driver power window switch accessory voltage circuit and ground circuit.

Does the test lamp illuminate?

Go to Step 6

Go to Step 8

6

Inspect for a poor connections at the driver power 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 10

Go to Step 9

7

Repair the open in the driver power window switch accessory voltage circuit. Refer to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 10

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8

Repair the open in the driver power window switch ground circuit. Refer to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 10

--

9

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

Is the repair complete?

Go to Step 10

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10

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2