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:
If the System Needs Service
If the navigation system needs service and the steps listed here have been followed
but there are still problems, see your dealer for assistance. ...
Climate and Air Quality
Select the Climate and Air Quality menu and the following will be displayed:
- Auto Fan Speed
- Air Quality Sensor
- Remote Start Auto Seat Cool
- Remote Start Auto Heated Seats
- Auto Defog
- ...
MP3 Format
There are guidelines that must be met, when creating an MP3 disc. If the guidelines
are not met when recording a CD-R(W), the CD may not play. The guidelines are:
Sampling rate: 16 kHz, 22.05 kH ...