Buick LaCrosse 2011 Owner's Manual page 54

2-22 Keys, Doors and Windows
To express-open the sunshade from
the closed position, fully press and
release the rear of the switch (C).
The sunshade opens automatically.
To stop the sunshade partway,
press the switch a second time.
To express-close the sunshade
fully press and release the front
of the switch (D). The sunshade
closes automatically. To stop the
sunshade partway, press the switch
a second time.
Forcing the sunshade
forward of the sliding glass
panel may cause damage and
the sunroof may not operate
properly. Always close the
glass panel before closing
the sunshade.
The sunroof glass panel cannot be
opened or closed if the vehicle has
an electrical failure.
Anti-Pinch Feature
If an object is in the path of
the sunroof while it is closing,
the anti-pinch feature will detect
the object and stop the sunroof
from closing at the point of the
obstruction. The sunroof and
sunshade will then return to the
open or vent position. To close
the sunroof once the obstruction
has been removed, refer to
"Express-Open/Express-Close"
earlier in this section.
I n f o r ma t i o n P r o v i d e d b y :
Dirt and debris may collect on
the sunroof seal or in the track.
This could cause issues with
sunroof operation and noise.
It could also plug the water drainage
system. Periodically open the
sunroof and remove any obstacles
or loose debris. Wipe the sunroof
seal and roof sealing area using a
clean cloth, mild soap, and water.
Do not remove grease from the
sunroof.