GM Service Manual Online
For 1990-2009 cars only

The overhead console has separate sunroof vent and slide switches.

The sunroof glass may be moved by switch control to any of the following positions:

    • Express Open / Comfort Stop (glass opens to within 100 mm of full open)
    • Slide fully open (retracted into the roof cavity)
    • Vent fully open (rear of glass raised to the limit of its travel)
    • Partially open in either slide or vent mode
    • Fully closed (flush with the vehicle roof)

Opening Sunroof to the Slide Fully Open Position

The sunroof may be opened to this position by using one of the following methods:

    • Normal open (the open button must be held until opened).
    • Express open (push the open button to the second position momentarily, (less than 1.5 seconds).

Opening Sunroof to the Vent Fully Open Position

The sunroof can be opened to this position by using the following method:

Normal open (the open button must be held until opened)

Opening Sunroof to the Partially Slide/Vent Open Positions

The sunroof can be opened to these positions by using the following method:

Normal open (the open button must be held until the desired open position is obtained)

Closing Sunroof to the Fully Closed Position

The sunroof may be closed to this position by using the following method:

    • Normal vent close (either close button must be held until closed)
    • Normal close (either close button must be held until closed)

As the glass panel closes, it will open slightly twards the vent position to provide a better seal.

Stuck Switch Protection

If any vent or slide switch is closed for more than 30 seconds, the sunroof control module considers the switch a stuck switch. In this case, the switch input is ignored by the sunroof control module until the switch is opened or the power is cycled to the module. Under these conditions only, the sunroof is allowed to close from any position. Once the closed position is obtained, no further sunroof operation is allowed until the stuck switch is opened or the power is cycled to the module.