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Potential Issues You May Encounter
Some OnStar services are disabled after 5 days
OnStar cannot perform Remote Door Unlocks, alerts or Stolen Vehicle Assistance after
the vehicle has been off continuously for 5 days. After 5 days, OnStar can contact
Roadside Service and a locksmith to help gain access into the vehicle.
Global Positioning System (GPS)
• Obstruction of the GPS can occur in a large city with tall buildings, in parking garages,
around airports, in tunnels, underpasses, parking garages or in an area with very dense
trees. If GPS signals are not available, the OnStar system should still operate to call
OnStar. However, the OnStar Center could have difficulty identifying the exact location.
The Advisors may ask you to hold while they update the vehicle location.
• In emergency situations, OnStar can use the last stored GPS location to send to
Emergency responders.
• A temporary loss of GPS can cause loss of the ability to send a Turn-by-Turn Navigation
route. The Advisor may give a verbal route or may ask for a call back after the vehicle is
driven into an open area.
Cellular and GPS antennas
Avoid placing items over or near the antenna to prevent blocking cellular reception and
GPS signal reception. Cellular reception is required for OnStar to send remote signals to
the vehicle.
"Unable to connect to OnStar" message
You will hear this message if there is limited cellular coverage or the cellular network
has reached maximum capacity. Push the
driving a few kilometres into another cellular area.
Payment lapse and system deactivation
An active OnStar subscription is required for all services to work, including Hands-
Free Calling. If you do not arrange for payment at a time when a payment is due,
the system may be deactivated by OnStar and you will be without protection of
the OnStar Automatic Crash Response, Emergency Services and all other services
included in your subscription.
Vehicle and power issues
OnStar services require a vehicle electrical system, wireless service and GPS satellite
technologies to be available and operating for features to function properly. These
systems may not operate if the battery is discharged or disconnected.
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button to try the call again or try after
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