2005 Buick LaCrosse Owner's Manual - Page 114

Sunroof The vehicle may have a sunroof. It includes a sliding glass panel and a sunshade. The sunroof control is on the headliner, by the map lamps. The sunroof control works only when the ignition is on or in accessory, or when Retained Accessory Power (RAP) is active. See Retained Accessory Power (RAP) on page 2-22. To raise the sunroof to the vent position, press the back of the control. Push and hold the front of the control to close the sunroof from the vent position. With the sunroof in the vent position, press and release the back of the control to express-open the sunroof. The sunshade will automatically open with the sunroof. To stop the express-open function, press the back of the control again. To close the sunroof, press and hold the front of the control. To stop the sunroof, release the control. The sunshade must be closed manually. The sunroof panel cannot be opened or closed if your vehicle has an electrical failure. 2-42