Reactivation for Subsequent Owners
Push 
and follow the prompts to speak to an Advisor as soon as possible after acquiring the vehicle.
The Advisor will update vehicle records and will explain the OnStar service offers and options available.
See also:
Dome Lamps
There are front and rear dome lamps.
The dome lamp controls are located in the overhead console. To change the settings,
press the following:
(Dome Lamp Override): Turns the
lamps off, even whe ...
Instrument Panel, Vinyl, and Other Plastic Surfaces
Use a soft microfiber cloth dampened with water to remove dust and loose dirt.
For a more thorough cleaning, use a soft microfiber cloth dampened with a mild soap
solution.
Notice: Soaking or sat ...
Engine Coolant Heater
The engine heater can provide easier starting and better fuel economy during engine warm-up in cold weather conditions at or below −18°C (0°F). Vehicles with an engine heater should be plugged ...