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:
Horn
Press near or on the horn symbols on your
steering wheel pad to sound the horn. ...
Service All-Wheel Drive Light
This light should come
on briefly when you turn
on the ignition, as a
check to show you it
is working.
The service all-wheel drive light comes on to
indicate that there may be a problem with ...
Environmental Concerns
Off-road driving can provide wholesome and
satisfying recreation. However, it also raises
environmental concerns. We recognize these
concerns and urge every off-roader to follow these
basic rules ...