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
vehicle is equipped with the Tire
Pressure Monitoring System. If a
diagnostics check is needed
between e-mails, push 
, and
an Advisor can run a check.
See also:
Driving on Wet Roads
Rain and wet roads can reduce vehicle traction and affect your ability to stop
and accelerate. Always drive slower in these types of driving conditions and avoid
driving through large puddles and ...
Underbody Maintenance
Use plain water to flush dirt and
debris from the vehicle's underbody.
Your dealer or an underbody car
washing system can do this. If not
removed, rust and corrosion can
develop. ...
Theft-Deterrent Feature
TheftLock® is designed to
discourage theft of the vehicle's
radio by learning a portion of the
Vehicle Identification Number (VIN).
The radio does not operate if it is
stolen or moved to a di ...