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:
MRC, electric power steering and other advanced control systems
Supporting the ATS's new suspension designs are advanced damping, steering
and braking systems, including Magnetic Ride Control.
Magnetic Ride Control (MRC) is the heart of the FE3 Sport Suspensio ...
Lockout Protection
If the power door lock switch is
pressed when the key is in the
ignition and a door is open, all the
doors will lock and only the driver
door will unlock. If the doors are
closed, they can b ...
Ignition Transmission
Lock Check
While parked, and with the parking
brake set, try to turn the ignition to
LOCK/OFF in each shift lever
position.
- The ignition should turn to
LOCK/OFF only when the shift
lever is in P (Pa ...