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:
Vehicle Data Recording and Privacy
This GM vehicle has a number of sophisticated computers that record information
about the vehicle’s performance and how it is driven. For example, the vehicle uses
computer modules to monitor and ...
Reducing Speed While Using
Cruise Control
If the cruise control system is
already activated:
- Press and hold the −SET button
on the steering wheel until the
desired speed is reached, then
release it.
- To slow down in small a ...
Front Fog Lamps
The front fog lamp button is located on the exterior lamp control, on the
outboard side of the steering wheel.
The ignition must be on to turn on the fog lamps.
(Front Fog Lamps): Press to ...






