OnStar Additional Information

See also:

How to Inspect the Engine Air Cleaner/Filter
To inspect the air cleaner/filter, remove the filter from the vehicle and lightly shake the filter to release loose dust and dirt. If the filter remains covered with dirt, a new filter is required ...

Phone Settings
See Bluetooth (Overview) or Bluetooth (Infotainment Controls) or Bluetooth (Voice Recognition) or Bluetooth (UHP Mexico Only) in the “Phone” section for more information on phone settings. ...

Checking Engine Oil
It is a good idea to check the engine oil level at each fuel fill. In order to get an accurate reading, the oil must be warm and the vehicle must be on level ground. The engine oil dipstick handle is ...