2008 GMC Acadia Owner's Manual - Page 142

Sunroof The vehicle may have a sunroof over the front seats, and a rear sunroof over the second row seats. The rear sunroof does not open. The switches to operate the front sunroof and rear sunshade are located on the headliner above the rearview mirror. The ignition must be in ON or ACCESSORY to operate the sunroof. See Ignition Positions on page 2-26. 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. 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. 2-60