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:
Defensive Driving
Defensive driving means “always expect the unexpected.” The first step in driving
defensively is to wear the safety belt. See Safety Belts .
Assume that other road users (pedestrians, bicy ...
Calling for Service
When calling Roadside Service,
have the following information
ready:
- Your name, home address, and
home telephone number.
- Telephone number of your
location.
- Location of the vehicle.
- ...
Flash-to-Pass
The flash—to—pass feature works with the low beams or Daytime Running Lamps
(DRL) on or off.
To flash the high beams, pull the turn signal/lane change lever all the way
toward you, then release i ...