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:
CD/DVD Player
The CD/DVD player can play CDs,
DVD-As, MP3/WMA CDs, MP3/WMA DVDs, and DVD-Vs.
The CD/DVD player will not play
8 cm (3 in) discs. ...
Adjusting the EQ (Equalizer)
For vehicles with an equalizer:
1. Press the TONE button.
2. Select EQ.
3. Select the setting.
Press the BACK button to go
back to the Tone Settings menu. ...
Braking in Emergencies
ABS allows the driver to steer and
brake at the same time. In many
emergencies, steering can help
more than even the very best
braking. ...