Express Open
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
The express open will operate from the closed or partially open position. To express open the power sunroof, turn the ignition to RUN. Press the sunroof switch rearward once. This will apply the sunroof switch low reference to the sunroof switch open signal circuit. From the closed position, the sunroof motor/module assembly will control the motor to lower the rear of the sunroof glass slightly and then slide it rearward between the roof and the headliner, along with the sunshade. The wind deflector will raise upward. To stop the sunroof glass in a desired position other than to the express open position, press the sunroof switch, in either direction, to stop the movement.