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:
Accessories and Modifications
Adding non-dealer accessories or making modifications
to the vehicle can affect vehicle performance and safety, including such things
as airbags, braking, stability, ride and handling, emissions s ...
Brake Pedal Travel
See your dealer if the brake pedal does not return
to normal height, or if there is a rapid increase
in pedal travel. This could be a sign of brake
trouble. ...
Climate and Air Quality
If equipped, select the Climate and Air Quality menu and the following may be
displayed:
Auto Fan Speed
Remote Start Auto Heat Seats
Auto Defog
Auto Rear Defog
Auto Fan Speed
This will ...
