Traction – AA, A, B, C
The traction grades, from highest to lowest, are AA, A, B, and C. Those grades represent the tire's ability to stop on wet pavement as measured under controlled conditions on specified government test surfaces of asphalt and concrete. A tire marked C may have poor traction performance.
Warning: The traction grade assigned to this tire is based on straight-ahead braking traction tests, and does not include acceleration, cornering, hydroplaning, or peak traction characteristics.
See also:
Control of a Vehicle
Braking, steering, and accelerating are important factors in helping to control a vehicle while driving. ...
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 the v ...
Starting the Vehicle
1. Press and release on the Remote
Keyless Entry transmitter.
2. Press and hold for about two
seconds. The turn signal lamps will briefly flash to confirm the vehicle has been
started. The pa ...