2010 Hummer H3 Owner's Manual - Page 164

7-10 Infotainment System Fixed Mast Antenna The fixed mast antenna can withstand most car washes without being damaged as long as it is securely attached to the base. If the mast becomes slightly bent, straighten it out by hand. If the mast is badly bent, replace it. Occasionally check to make sure the antenna is tightened to its base. If tightening is required, tighten by hand until fully seated plus one quarter turn. Audio Players CD Player The CD player can play smaller 8 cm (3 in) single CDs with an adapter ring. A CD in the player it stays in the player when the ignition is turned off. When the ignition or radio is turned on, the CD starts to play where it stopped, if it was the last selected audio source. Care of CDs Store CDs in their original cases or other protective cases and away from direct sunlight and dust. The CD player scans the bottom of the disc. If the bottom of a CD is damaged it may not play properly or at all. Do not touch the bottom of a CD while handling it. Pick up CDs by grasping the outer edges or the edge of the hole and the outer edge. If the surface of a CD is dirty, 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. Care of the CD Player Do not add labels to a CD, it could get caught in the CD player. Use a marking pen to write on the top of the CD if a description is needed. Do not use CD lens cleaners, they could damage the CD player. Notice: If a label is added to a CD, or more than one CD is inserted into the slot at a time, or an attempt is made to play scratched or damaged CDs, the CD player could be damaged. While using the CD player, use only CDs in good condition without any label, load one CD at a time, and keep the CD player and the loading slot free of foreign materials, liquids, and debris. If an error displays, see "CD Messages" later in this section. Satellite Radio Antenna The XM Satellite Radio antenna is located on the roof of the vehicle. Keep the antenna clear of obstructions for clear radio reception. If the vehicle has a sunroof, the performance of the XM system may be affected if the sunroof is open.