Uniform Tire Quality Grading

Quality grades can be found where applicable on the tire sidewall between tread shoulder and maximum section width.

For example:

See also:

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. Say “Yes.” System re ...

Extending Engine Run Time
To extend the engine run time by 10 minutes, repeat Steps 1 and 2 while the engine is still running. The engine run time can only be extended if it is the first remote start since the vehicle ...

CALIBRATION COMPLETE
This message displays when the compass calibration is complete. See Compass for more information. ...