2003 GMC Sierra 1500 Pickup Owner's Manual - Page 146

Outside Power Camper-Type Mirror If your vehicle is equipped with outside power camper-type mirrors, they can be adjusted so you can have a clear view of objects behind you. To return the mirrors and the mirror glass to their normal position press the left side of the mirror control. If the mirrors are manually folded, use the power mirror control to return it to it's original position. To extend the mirrors move the selector switch, located above the mirror control, to the middle position. The mirror control will illuminate. Press the left side of the mirror control to slide the mirror heads away from the body of the vehicle. Press the right side of the mirror control to slide the mirror heads toward the body of the vehicle. Outside Automatic Dimming Mirror If your vehicle is equipped with this feature, the driver's side outside mirror will adjust for the glare of headlamps behind you. This feature is controlled by the on and off settings found on the electrochromic mirror. See Automatic Dimming Rearview Mirror with Compass and Temperature Display on page 2-54. Outside Power Foldaway Mirrors If your vehicle is equipped with outside power foldaway mirrors the mirrors can be folded in toward the body of the vehicle. To fold in the mirrors, move the upper selector switch, located above the mirror control, to the middle position. Press the right side of the mirror control to fold the mirrors toward the body of the vehicle. The mirror glass on one or both sides of the vehicle may automatically adjust before the mirror folds inward. When the mirror glass or mirror starts moving, you can release the mirror control. 2-59