2002 Buick Regal Owner's Manual - Page 128

Sunroof (Option) Your vehicle may be equipped with an express-open sunroof. It includes a sliding glass panel and a one-piece sunshade. The switch is located overhead on the headliner. VENT: To open the sunroof to the vent position only, push and hold the front of the switch. You will need to open the sunshade by hand. To close the sunroof from the vent position, push and hold the rear (indented part) of the switch. Open/Express Open: To open the sunroof, push the rear (indented part) of the switch once. The sunroof and sunshade will open by themselves. This is the express-open feature. Close: To close the sunroof, push and hold the front of the switch until the sunroof motor stops. The sunshade can only be closed by hand. The switch works only when the ignition is on or when retained accessory power is active. See "Retained Accessory Power" in the Index. 2-64