See also:

Service Bulletins
Service Bulletins give additional technical service information needed to knowledgeably service General Motors cars and trucks. Each bulletin contains instructions to assist in the diagnosis ...

Interior Lighting
Courtesy Lamps When any door is opened, the interior lamps turn on to enter and exit the vehicle. Turn the instrument panel brightness control located on the left side of the steering wheel, ...

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 opt ...