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:
Power Assist Steps
The vehicle may have power assist steps. To enable or disable the power assist
steps push .
The power assist steps automatically extend from beneath the vehicle on the side
in which the door ha ...
Automatic EPB Release
The EPB will automatically release if the vehicle is running, placed into
gear, and an attempt is made to drive away. Avoid rapid acceleration when the
EPB is applied, to preserve parking brake lini ...
Windshield Wiper/Washer
The windshield wiper/washer lever is located on the right side of the
steering column. With the ignition in ACC/ACCESSORY or ON/RUN/START, move the
windshield wiper lever to select the wiper spe ...