Arming the System
To arm the system, press 
on the
RKE transmitter.
The alarm automatically arms after about 30 seconds. The security light, located on the instrument panel, flashes.
Press 
on the RKE transmitter to
open the trunk without setting off the
alarm. The system rearms when the
trunk is closed.
See also:
Climate Control Influence on eAssist Operation and Fuel Economy (If
Equipped)
The climate control system is
dependent upon other vehicle
systems for heat and power input.
Certain climate control settings can
lead to higher fuel usage and/or
fewer auto stops.
The follo ...
Exit Lighting
This allows selection of how long
the exterior lamps stay on when
leaving the vehicle and it is dark
outside.
Press SELECT when Exit Lighting is
highlighted. Turn the Menu knob to
select Of ...
Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will
check the engine, transmission, antilock brakes, and major vehicle systems. It also
checks the tire pressures, if the v ...