See also:

Parking Brake and Automatic Transmission P (Park) Mechanism Check
WARNING: When you are doing this check, the vehicle could begin to move. You or others could be injured and property could be damaged. Make sure there is room in front of the vehicle in case it ...

Add-on Electrical Equipment
The OnStar system is integrated into the electrical architecture of the vehicle. Do not add any electrical equipment. See Add-On Electrical Equipment. Added electrical equipment may interfer ...

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 transmi ...