See also:

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 ...

Interior Mirrors
Adjustment Hold the rearview mirror in the center and move it to view the area behind the vehicle. Manual Rearview Mirror For vehicles with a manual rearview mirror, push the tab forward for dayt ...

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 ...