See also:

High-Beam On
The high-beam on light comes on when the high-beam headlamps are in use. See Headlamp High/Low-Beam Changer  for more information. ...

Treadwear
The treadwear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specified government test course. For example, a tire graded 150 ...

Using the Maintenance Schedule
We at General Motors want to help you keep your vehicle in good working condition. But we do not know exactly how you will drive it. You may drive very short distances only a few times a week. O ...