GM Service Manual Online
For 1990-2009 cars only

Test Description

The numbers below refer to the step numbers 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 left front 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.

  2. A short to ground in either power window up or down circuits would allow the test lamp to illuminate momentarily but would cause the PWR WDO circuit breaker to open.

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 LF power window from the master switch

Does the LF 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. Access the power window master switch.
  2. Using the J 35616 connector test adapter kit, connect a test lamp between the power window motor left front up and down circuits at the master switch.
  3. Operate the left front power window in the up and down direction.

Does the test lamp illuminate in both directions?

Go to Step 5

Go to Step 6

5

Test the power window motor feed left front up and down circuits for an open or short to ground.

Did you find and correct the condition?

Go to Step 8

Go to Step 7

6

Replace the left power window master switch.

Refer to Front Side Door Window Switch Replacement .

Is the repair complete?

Go to Step 8

--

7

Replace the left front power window motor.

Refer to Power Window Motor Replacement .

Is the repair complete?

Go to Step 8

--

8

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3