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:
Vehicle Personalization
Vehicle customization allows certain
features to be programmed for one
preferred setting.
Only the customization options
available will be displayed on
the DIC.
The default settings were pre ...
Driving On Grades
Reduce speed and shift to a
lower gear before starting down a
long or steep downgrade. If the
transmission is not shifted down,
the brakes might have to be used
so much that they would get h ...
Power Windows
WARNING
Leaving children in a vehicle with the RKE transmitter is dangerous for many
reasons; children or others could be badly injured or even killed. They could
operate the power windows or othe ...