Recommended Fuel
Use regular unleaded gasoline with a posted octane rating of 87 or higher. If the octane rating is less than 87, an audible knocking noise, commonly referred to as spark knock, might be heard when driving.
If this occurs, use a gasoline rated at 87 octane or higher as soon as possible. If heavy knocking is heard when using gasoline rated at 87 octane or higher, the engine needs service.
See also:
Voice Recognition
The voice recognition system uses commands to control the system and dial
phone numbers.
Noise: The system may not recognize voice commands if there is too much
background noise.
When to Speak ...
Tire Terminology and Definitions
Air Pressure: The amount of air inside the tire pressing outward on each
square inch of the tire. Air pressure is expressed in kPa (kilopascal) or psi
(pounds per square inch).
Accessory Weight: ...
Connections
OnStar Hands-Free Calling allows calls to be made and received from the vehicle.
The vehicle can also be controlled from a cell phone through the OnStar RemoteLink
mobile app. See www.onstar.com f ...