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:
Exterior Lamps Off Reminder
If a door is open, a reminder chime sounds when the headlamps or parking lamps
are manually turned on and the key is out of the ignition. To turn off the chime,
turn the headlamp switch to off or ...
Replacing Safety Belt System Parts after a Crash
WARNING
A crash can damage the safety belt system in the vehicle.
A damaged safety belt system may not properly protect the person using it,
resulting in serious injury or even death in a crash. T ...
Sound
Press CONFIG to enter the configure menu options, then press CONFIG again, repeatedly
until Sound is selected or press the Sound screen button to make speaker and DSP
(Digital Signal Processing) a ...