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:
Passing
More passing distance is needed when towing a trailer. Because the rig is
longer, it is necessary to go farther beyond the passed vehicle before
returning to the lane. ...
Symbols
The vehicle has components and
labels that use symbols instead of
text. Symbols are shown along with
the text describing the operation or
information relating to a specific
component, contro ...
Coverage
Services are provided up to
5 years/160 000 km(100,000mi),
whichever comes first.
In the U.S., anyone driving the
vehicle is covered. In Canada, a
person driving the vehicle without
permiss ...