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:
Overhead Console
Your vehicle may have this feature. The overhead
console may include reading lamps, a Universal
Home Remote and a sunroof switch. ...
Playing from an iPhone®
This feature supports the following
iPhone model:
• iPhone (3G – 3GS)
To use the iPhone, follow the same
instructions as stated earlier for
using an iPod. ...
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 ...