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.
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Potential Issues
Some OnStar services are disabled after five days. OnStar cannot perform Remote
Door Unlock or Stolen Vehicle Assistance after the vehicle has been off continuously
for five days. After five days, ...
Fuel Gauge
Metric
English
When the ignition is on, the fuel gauge shows about how much fuel the vehicle
has left in the fuel tank. An arrow on the fuel gauge indicates the side of the
vehicle the fuel ...
Manual Operation of Power Liftgate
To change the liftgate to manual operation, turn the mode switch to the OFF position.
With the power liftgate disabled and all of the doors unlocked, the liftgate
can be manually opened and closed. ...