2003 GMC Envoy Owner's Manual - Page 217

Rear Seat Entertainment System Your vehicle may have the optional Digital Versatile Disc (DVD) entertainment system. The entertainment system includes a DVD player, a video display screen, two sets of IR (Infrared) wireless headphones, a remote control and an instructional video disc. Headphones The entertainment system includes two IR wireless headphones. Mini-headphone jacks are also provided for use with customer provided headphones. The wireless headphones have an ON/OFF switch and a volume control. To use the headphones turn the switch to ON. An indicator light will illuminate. If the light does not illuminate, the batteries may need to be replaced. See Battery Replacement later in this section for more information. Switch the headphones to OFF when not in use. If the system is shut off, or if the headphones are out of range of the IR transmitters below the overhead RSE control panel for more than three minutes, the headphones will shut off automatically to save the batteries. If you move too far forward or step out of the vehicle, the headphones will cut out. Before You Drive The video entertainment system is for passengers in the second and third row seats only. The driver cannot safely view the video screen while driving and should not try to do so. In severe or extreme temperature conditions your entertainment system should not be operated until the temperature is within the operating range. This will keep your video components from being damaged when the temperature is below -4°F (-20°C) or above 140°F (60°C). To resume operation, shut off the entertainment system, pull down the video screen and then heat or cool the vehicle until the temperature is within the operating range. To adjust the volume on the headphones, use the volume control. Notice: Do not store the headphones in heat or direct sunlight. This could damage the headphones and would not be covered by your warranty. Keep the headphones stored in a cool place. 3-92