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:
Add-On Equipment
When you carry removable items, you may need to put a limit on how many people
you can carry inside your vehicle. Be sure to weigh your vehicle before you buy
and install the new equipment.
Notic ...
Service Vehicle Messages
SERVICE AC SYSTEM
This message is displayed if there is a problem with the air conditioning
system. Take the vehicle to your dealer for service.
SERVICE POWER STEERING
This message is displa ...
Chime Volume
This feature allows you to select the
volume level of the chime.
Press the customization button until
Chime Volume appears on the DIC
display. Press the set/reset button
once to access the se ...