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:
Emergency
With Automatic Crash Response,
the built-in system can automatically
connect to help in a crash even if
you cannot ask for it.
Push to connect to an
Emergency Advisor. GPS
technology is us ...
Turn Signals When Towing a
Trailer
The arrows on the instrument panel
flash whenever signaling a turn or
lane change. Properly hooked up,
the trailer lamps also flash, telling
other drivers the vehicle is turning,
changing la ...
Parking
(Manual Transmission)
Before getting out of the vehicle,
place the shift lever in R (Reverse)
and firmly apply the parking brake.
For vehicles with the key access
ignition, turn the ignition key to
OFF/LOCK, and r ...