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:
AWD and Magnetic Ride Control support new driving experience
A layered approach to the driving experience relies on new and established
technologies - all rooted in a stiff structure. The body is infused with
strategically placed ultra-high-strength steel f ...
Driving on Grades
Reduce speed and shift to a lower gear before starting down a long or steep
downgrade. If the transmission is not shifted down, the brakes might have to be
used so much that they would get hot and n ...
SERVICE SUSPENSION
SYSTEM
This message displays when
there is a problem with the Magnetic
Ride Control system. See Magnetic
Ride Control for
more information. Have the vehicle
serviced by your dealer. ...