See also:

Hitches
Use the correct hitch equipment. See your dealer or a hitch dealer for assistance. • The rear bumper on the vehicle is not intended for hitches. Do not attach rental hitches or other bumpe ...

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 ...

Immobilizer Operation
This vehicle has a passive theft-deterrent system. The system does not have to be manually armed or disarmed. The vehicle is automatically immobilized when the key is removed from the ignition. The ...