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:
Tires
Every new GM vehicle has high-quality tires made by a leading tire
manufacturer.
See the warranty manual for information regarding the tire warranty and
where to get service. For additional infor ...
Navigation System
The navigation system provides detailed maps of most major freeways and roads
throughout the United States and Canada. After a destination has been set, the system
provides turn-by-turn instructio ...
When the System Does Not Seem To Work Properly
Missed alerts can occur under normal circumstances and will increase in wet conditions.
The system does not need to be serviced. SBZA is designed to ignore stationary objects;
however, the system ...