Gasoline Octane
Use regular unleaded gasoline with a posted octane rating of 87 or higher. If the octane rating is less than 87, you may notice an audible knocking noise when you drive, commonly referred to as spark knock. If this occurs, use a gasoline rated at 87 octane or higher as soon as possible.
If you are using gasoline rated at 87 octane or higher and you hear heavy knocking, your engine needs service.
See also:
Older Children
Older children who have outgrown booster seats
should wear the vehicle’s safety belts.
Q: What is the proper way to wear safety belts?
A: An older child should wear a lap-shoulder belt
and get ...
Deleting a Paired Phone
1. Press
.
► For vehicles without a navigation system, the system responds “Ready,” followed by a tone.
► For vehicles with a navigation system, the system responds with a tone. Aft ...
Using Voice Commands
During a Planned Route
Cancel Route
1. Push . System responds:
“OnStar ready,” then a tone. Say
“Cancel route.” System
responds: “Would you like to
cancel route directions to your
destination?”.
2. Sa ...