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:
Tachometer
The tachometer displays the engine speed in revolutions
per minute (rpm). ...
Engine Compartment Fuse Block
The fuse block is located under the hood in the
engine compartment on the driver’s side of
the vehicle.
Remove the primary cover by pressing the
two locking tabs. Remove the secondary cover
b ...
Buying New Tires
GM has developed and matched specific tires for the vehicle. The original equipment
tires installed were designed to meet General Motors Tire Performance Criteria Specification
(TPC Spec) system r ...