1998 GMC Envoy Owner's Manual - Page 118

Erasing Ch; !lS Onstar@System (Optional) This system may be ordered if you have the optional fixed cellular telephone. the following services are available 24 hours a day: 0 0 To erase all three programmed channels, hold down the two outside buttons until the red light begins to flash. Individual channels cannot be erased, but can be reprogrammed using the procedure for programming the transmitter explained earlier. Roadside Services with location Emergency Services Button Remote Door Unlock Theft Detectionhlotification and Stolen-Vehicle Tracking Automatic Notification of Air Bag Deployment ConciergeKustomer Convenience Services Accessories Accessories for the universal transmitter are available from the manufacturer of the unit. If you would like additional information, please call 1-800-355-35 15. 0 Cellular Telephone (Option) Your vehicle has been prewired for dealer installation of a dual-mode (analog/digital) cellular telephone. fixed A mobile or a portable hand-held system is available. Voice activation and hands-free operation are standard features. For more information, contact your GMC dealer. A user's guide is provided with the telephone. 0 For more information, contact your GMC dealer. 2-57