See also:

California Fuel Requirements
If the vehicle is certified to meet California Emissions Standards, it is designed to operate on fuels that meet California specifications. See the underhood emission control label. If this fuel is n ...

Units
Press the customization button until UNITS: U.S. (ENGLISH) appears in the display. To select English or metric, press the select button while UNITS: U.S. (ENGLISH) is displayed on the DIC. Pre ...

Potential Issues
Some OnStar services are disabled after five days. OnStar cannot perform Remote Door Unlock or Stolen Vehicle Assistance after the vehicle has been off continuously for five days. After five ...