Cellular and GPS Antennas
Avoid placing items over or near the antenna to prevent blocking cellular and GPS signal reception.
Cellular reception is required for OnStar to send remote signals to the vehicle.
See also:
Security Light
The immobilizer light should come on briefly as the engine is started.
If it does not come on, have the vehicle serviced by your dealer.
If the system is working normally, the indicator ligh ...
Power Door Locks
Select Power Door Locks and the following will be displayed:
- Unlocked Door Anti Lock Out
- Auto Door Unlock
- Delayed Door Lock ...
Vehicles With a Navigation System
An image appears on the navigation screen with the message “Check
Surroundings for Safety” when the vehicle is shifted into R (Reverse).
The navigation screen goes to the previous screen after app ...