GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

Operate each window up and down from the LF window switch.

Each window operates quietly and smoothly without sticking.

LF power window is inoperative. Go to Power Window Inoperative - Left Side Front .

2

Operate the RF window from the individual switch.

The window operates quietly and smoothly, without sticking.

    • RF power window is inoperative from LF window switch. Go to Power Window Inoperative - Right Side Front .
    • RF power window is inoperative from RF window switch. Go to Power Window Inoperative - Right Side Front .
    • RF power window is inoperative from both window switches. Go to Power Window Inoperative - Right Side Front .
    • All power windows are inoperative. Go to Power Windows Inoperative - All .

3

  1. Make sure the LF window is closed.
  2. Press the LF window switch DOWN momentarily past the first defeat.

The LF window continues to the fully down position.

Express down feature is inoperative. Go to Power Window Express Down Function Inoperative .

4

Open and close the vent windows from the interior lamps and the multifunction switch.

The window operates quietly and smoothly, without sticking.

    • Rear quarter windows are inoperative. Go to Rear Quarter Window Inoperative .
    • One rear quarter window is inoperative. Go to Rear Quarter Window Inoperative .