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:
SERVICE KEYLESS START
SYSTEM
If the vehicle has the keyless
access system, this message
displays when there is a problem
with this feature. See your dealer. ...
California Perchlorate Materials Requirements
Certain types of automotive applications, such as airbag initiators, safety
belt pretensioners, and lithium batteries contained in Remote Keyless Entry
transmitters, may contain perchlorate material ...
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 ...