See also:

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 would w ...

Safety Belts: They Are for Everyone
This section of the manual describes how to use safety belts properly. It also describes some things not to do with safety belts. WARNING: Do not let anyone ride where a safety belt cannot be ...

Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if ...