See also:

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 ...

Airbag System Messages
SERVICE AIR BAG This message displays if there is a problem with the airbag system. Have your dealer inspect the system for problems. See Airbag Readiness Light   and Airbag System  ...

Automatic Level Control
The automatic level control rear suspension is available on light-duty vehicles and comes as a part of the Continuous Damping Control (CDC) suspension, if equipped. This type of level control is fu ...