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:
Servicing Your Airbag-Equipped Vehicle
Airbags affect how your vehicle should be
serviced. There are parts of the airbag system
in several places around your vehicle. You do not
want the system to inflate while someone is
working on yo ...
Uplevel Headlamp Assembly
The uplevel model vehicle has a
high intensity discharge (HID) high/low beam, a dedicated DRL, and a
parking/turn signal lamp on the
headlamp assembly. See High
Intensity Discharge (HID) Light ...
Tire Pressure Monitor System
The Tire Pressure Monitor System (TPMS) uses radio
and sensor technology to check tire pressure levels. The
TPMS sensors monitor the air pressure in your vehicle’s
tires and transmit tire pres ...