Buick 2004 Century - Manual (Page 102)

Sunroof
The vehicle may have a sunroof. It includes a sliding
glass panel and a sunshade.
The switch to open the sunroof is located overhead on
the headliner.
The switch works only when the ignition is on or when
Retained Accessory Power (RAP) is active. See
“Retained Accessory Power (RAP)” in Ignition Positions
on page 2-19.
VENT: To raise the sunroof to the vent position, push
and hold the front of the switch until the sunroof
glass stops. The sunshade must be opened by hand.
To close the sunroof from the vent position, push
and hold the rear of the switch until the sunroof
glass closes.
Open/Express Open: To open the sunroof, push the
rear of the switch once. The sunroof and sunshade
will open by themselves. To close the sunroof, push and
hold the front of the switch until the sunroof motor
stops. The sunshade must be closed by hand.
2-36