See also:

How OnStar® Service Works
In order to provide you with OnStar® services, your vehicle’s OnStar® system has the capability of recording and transmitting vehicle information. This information is automatically sent to an ...

How to Reset the Engine Oil Life System
The Engine Oil Life System calculates when to change the engine oil and filter based on vehicle use. Whenever the oil is changed, reset the system so it can calculate when the next oil change is ...

Service
Your dealer knows your vehicle best and wants you to be happy with it. We hope you will go to your dealer for all your service needs. You will get genuine GM parts and GM-trained and supported ser ...