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, or 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, OnStar could have difficulty identifying the exact 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.
See also:
Head Restraint Adjustment
Do not drive until the head restraints
for all occupants are installed and
adjusted properly.
To achieve a comfortable seating
position, change the seatback
recline angle as little as necessa ...
If the Vehicle Is Stuck
Slowly and cautiously spin the wheels to free the vehicle when stuck in
sand, mud, ice, or snow.
If stuck too severely for the traction system to free the vehicle, turn the
traction system off an ...
Express Window Anti-Pinch Feature
If any object is in the path of the
window when the express-up is
active, the window will stop at the
obstruction and auto-reverse to a
preset factory position. Weather
conditions such as se ...






