Express Open

WARNING: This page is about a different car, the 2002 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.

The express open will work only with the glass in between the full vent and partial open positions. To express open the power sunroof, momentarily press (less than 1.5 seconds) the sunroof switch rearward once. This will apply the sunroof switch low reference to the sunroof switch signal open signal circuit (5 volt reference) input, pulling the reference voltage down to 0 volts momentarily. The momentary 0 volts input to the sunroof module indicates an express open request. The sunroof module will control the sunroof motor circuit to automatically slide (express open) the sunroof glass above the roof. The sunroof glass will stop (soft stop) at the full open position based on the inputs from the limit switches. As the sunroof glass expresses open so will the sunshade. To stop the sunroof glass in a desired position other than to the express open position:

As the sunroof is expressing open, press the sunroof switch again (in either direction) to stop the movement.
Instead of momentarily pressing the sunroof, maintain pressing (more than 1.5 seconds) the sunroof switch rearward and when the sunroof glass reaches the desired position, then release the switch.