OnStar

See also:

Securing an Add-On Child Restraint in the Vehicle
WARNING A child can be seriously injured or killed in a crash if the child restraint is not properly secured in the vehicle. Secure the child restraint properly in the vehicle using the vehicle s ...

Air Conditioning
(Air Conditioning): Press to turn the air conditioning (A/C) on and off. An indicator light comes on when A/C is on. The A/C does not work when the outside temperature is below 4°C (40°F). If is ...

Cooling System
If the vehicle has the Duramax® Diesel engine, see the Duramax® Diesel Supplement for more information. The cooling system allows the engine to maintain the correct working temperature. 5.3 L En ...