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:
Engine Coolant
The cooling system in the vehicle
for all engines and the intercooler is
filled with DEX-COOL®. This coolant
is designed to remain in the
vehicle for 5 years or 240 000 km
(150,000 mi), whic ...
Additional Program Information
All program options, such as shuttle service, may not be available at every dealer.
Please contact your dealer for specific information about availability. All Courtesy
Transportation arrangements ...
Map Destination Screen Functions
If the map screen is used to show destination, it will have map screen capabilities
such as GO, Mark, Zoom, Scroll, etc. The address is shown at the top of the screen.
Destination Map Screen ...