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:
Engine Air Cleaner/Filter
See Engine Compartment Overview for the location of the engine air cleaner/filter. ...
If a Crash Occurs
If there has been an injury, call emergency services for help. Do not leave the
scene of a crash until all matters have been taken care of. Move the vehicle only
if its position puts you in danger ...
When It Is Time for New Tires
Factors such as maintenance,
temperatures, driving speeds,
vehicle loading, and road conditions
affect the wear rate of the tires.
Treadwear indicators are one way to
tell when it is time f ...