OnStar®
OnStar OverviewHill Start Assist (HSA)
This vehicle has an HSA feature, which may be useful when the vehicle is stopped
on a grade sufficient enough to activate HSA.
This feature is designed to prevent the vehicle from rolling, either forward
or rearward, during vehicle drive off. After the driver completely stops and holds
the ve ...
Checking Coolant
The vehicle must be on a level surface when checking the coolant level.
It is normal to see coolant moving in the upper coolant hose return line when
the engine is running.
Check to see if coolant is visible in the coolant surge tank. If the coolant
inside the coolant surge tank is boiling, do ...
Loss of Control
Skidding
There are three types of skids that correspond to the vehicle's three control
systems:
Braking Skid - wheels are not rolling.
Steering or Cornering Skid - too much speed or steering in a curve causes
tires to slip and lose cornering force.
Acceleration Skid - too much thro ...