GM Service Manual Online
For 1990-2009 cars only

Test Description

The number below refers to the step number on the diagnostic table.

  1. The passenger power window switch, on the master switch, shares a common RAP fuse supply voltage circuit and ground circuit with the driver window switch. If the passenger power window(s) operate properly from the master switch, the RAP fuse supply voltage circuit and ground circuit can be presumed good.

Step

Action

Yes

No

Schematic Reference: Power Window Schematics

1

Did you perform the Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Door Systems

2

  1. Turn ON the ignition, with the engine OFF.
  2. Operate the driver power window from the master switch

Does the driver power window operate normally?

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

Go to Step 3

3

Operate the passenger window(s) from the master switch.

Do the passenger window(s) operate properly?

Go to Step 4

Go to Power Windows Inoperative - All

4

  1. Disconnect the driver power window motor.
  2. Connect a test lamp between the power window motor up circuit and a good ground.
  3. Operate the driver power window in the up direction.

Does the test lamp illuminate?

Go to Step 5

Go to Step 7

5

  1. Connect a test lamp between the power window motor down circuit and a good ground.
  2. Operate the driver power window in the down direction.

Does the test lamp illuminate?

Go to Step 6

Go to Step 8

6

  1. Connect a test lamp between the power window motor up and down circuits.
  2. Operate the driver power window in the up and down directions.

Does the test lamp illuminate in both directions?

Go to Step 10

Go to Step 9

7

Test the power window motor up circuit for an open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 13

Go to Step 10

8

Test the power window motor down circuit for an open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 13

Go to Step 8

9

Inspect for poor connections at the power window master 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 13

Go to Step 11

10

Inspect for poor connections at the driver power 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 13

Go to Step 12

11

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

Is the repair complete?

Go to Step 13

--

12

Replace the driver power window motor. Refer to Power Window Motor Replacement .

Is the repair complete?

Go to Step 13

--

13

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2