GMC 2007 Acadia Owner's Manual page 165

Vent: From the closed position, press and hold
the front of the driver's side switch to vent
the sunroof. Press and hold the rear of the driver's
side switch to close the sunroof.
Express-open/Express-close: From the closed
position, press and release the rear of the
driver's side switch to express-open the sunroof.
Press and release the front of the driver's side
switch to express-close the sunroof.
The front sunshade must be opened and closed
manually. Push up on the sunshade handle
to open the sunshade.
Notice: The rear sunshade could be damaged
if you attempt to open or close it manually.
Do not manually open or close the rear
sunshade.
To open the rear sunshade, located over the
second row seats, press and release the rear of
the passenger's side switch. Press and release the
front of the switch to close the sunshade.
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