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:
Remote Vehicle Start
This feature allows you to start the engine from outside of the vehicle. It may
also start up the vehicle's heating or air conditioning systems and rear window
defogger. Normal operation of th ...
System Settings
CONFIG: Press to adjust the
number of favorites pages, auto
volume, XM (if equipped), and HDD
(if available) settings. The FAV,
AUTO VOL, XM (if equipped), and
HDD (if available) tabs displa ...
How to Detect a Tamper Condition
If is pressed and the horn
sounds, an attempted break-in has
occurred while the system was
armed.
If the alarm has been activated, the
THEFT ATTEMPTED message will
appear on the DIC. See A ...