2008 GMC Acadia Owner's Manual - Page 165

the HUD will display a distance bar that will fill in the closer you get to your destination. All navigation information is provided to the HUD by the navigation radio, if the vehicle has one. The HUD image displayed on the windshield will automatically dim and brighten to compensate for outside lighting. Format Two: This display includes the information in Format One without the transmission information and the outside air temperature. The HUD image can temporarily light up depending on the angle and position of the sunlight on the HUD display. This is normal and will change when the angle of the sunlight on the HUD display changes. Polarized sunglasses could make the HUD image harder to see. Care of the HUD Clean the inside of the windshield as needed to remove any dirt or film that could reduce the sharpness or clarity of the HUD image. Format Three: This display includes all the information in Format One along with a circular tachometer, but without outside air temperature. All formats will show the turn-by-turn navigation information and provide details about the next driving maneuver to be made. When you near your destination, To clean the HUD lens, use a soft, clean cloth that has household glass cleaner sprayed on it. Wipe the HUD lens gently, then dry it. Do not spray cleaner directly on the lens because the cleaner could leak into the unit. 3-23