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 wear one and a half (1½) times as well on the government course as a tire graded 100. The relative performance of tires depends upon the actual conditions of their use, however, and may depart significantly from the norm due to variations in driving habits, service practices and differences in road characteristics and climate.
See also:
Ignition Positions
The ignition has four different positions:
In order to shift out of P (Park), ignition must be in the
ON/RUN and the regular brake pedal must be applied.
Notice: Using a tool to force the key to ...
Delayed Locking
This feature allows the driver to delay the actual locking
of the doors. When the driver power door lock switch is
pressed with the key removed from the ignition, and the
driver door open, a chi ...
Owner Checks and Services
These owner checks and services should be
performed at the intervals specified to help ensure
the safety, dependability, and emission control
performance of your vehicle. Your GM
Goodwrench® deal ...