2007 GMC Acadia Owner's Manual - Page 328

Care of Your CDs and DVDs Handle CDs carefully. Store them in their original cases or other protective cases and away from direct sunlight and dust. The CD player scans the bottom surface of the disc. If the surface of a CD is damaged, such as cracked, broken, or scratched, the CD does not play properly or not at all. If the surface of a CD is soiled, take a soft, lint free cloth or dampen a clean, soft cloth in a mild, neutral detergent solution mixed with water, and clean it. Make sure the wiping process starts from the center to the edge. Do not touch the bottom side of a CD while handling it; this could damage the surface. Pick up CDs by grasping the outer edges or the edge of the hole and the outer edge. Multi-Band Antenna The multi-band antenna is located on the roof of your vehicle. This type of antenna is used with the AM/FM radio, as well as OnStar® and the XM™ Satellite Radio Service System, if your vehicle has these features. Keep this antenna clear of snow and ice build up for clear radio reception. If your vehicle has a sunroof, the performance of the radio system may be affected if the sunroof is open. Loading items onto the roof of your vehicle can interfere with the performance of the radio system and, if your vehicle has this feature, OnStar®. Make sure the multi-band antenna is not obstructed. Care of the CD and DVD Player The use of CD lens cleaners for CDs is not advised, due to the risk of contaminating the lens of the CD optics with lubricants internal to the CD mechanism. 328