Arming the System
To arm the system, do one of the following:
○ Press 
on the RKE transmitter.
○ Lock the vehicle using the key in the driver door.
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 liftgate without setting off the alarm. The system rearms when the liftgate
is closed.
See also:
How to Check Automatic Transmission Fluid
Because this operation can be a little difficult, it may be best to have this done at the dealer service department.
If not taken to the dealer, be sure to follow all the instructions here or a false ...
Insuring the Vehicle
Protect your investment in the GM vehicle with comprehensive and collision insurance coverage.
There are significant differences in the quality of coverage afforded by various insurance policy terms. ...
Vehicle Security
This vehicle has theft-deterrent features; however, they do not make it impossible
to steal. ...