2001 GMC Sierra 1500 Pickup Owner's Manual - Page 162

Premium Services (Includes Safety and Security Services) D Route Support -- An advisor can provide directions D subject to limitations caused by atmospheric conditions, such as severe weather or topographical conditions, such as mountainous terrain. or guidance to anywhere you want to go. In addition, they can help you locate gas stations, rest areas, ATMs, hospitals, hotels, stores, eateries and more. D subject to cellular carrier equipment limitations. Global positioning capabilities used to deliver service will not be available if satellite signals are obstructed. OnStar will not function if the vehicle's battery is discharged or disconnected. It may also be inoperative if the vehicle is in an accident and the OnStar or vehicle electrical system components are damaged. Safety and security services are provided by existing governmental emergency service providers. OnStar will use reasonable efforts to contact the appropriate emergency service provider and request assistance but cannot promise that they will respond to the call in a timely manner or at all. D Concierge Services -- The concierge advisor can obtain tickets, reservations or help with vacation/trip planning and other unique items and services. in the event that you are unable to drive. D Ride Assist -- An advisor can locate transportation OnStar System Limitations Complete limitations can be found on the subscriber services agreement. OnStar Service is: D available in the 48 contiguous United States, Alaska, Hawaii and Canada; D available when the vehicle is within the operating range of a cellular provider; 2-79