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:
Trip/Fuel Menu Items
Press MENU on the turn signal lever until the Trip/Fuel Menu is displayed. Use
to scroll through the following menu
items:
Digital Speedometer
Trip 1
Trip 2
Fuel Range
Average Fuel Eco ...
Interior Mirror
The vehicle has an automatic dimming inside rearview
mirror. Automatic dimming reduces the glare of lights
from behind the vehicle. The dimming feature comes on
and the indicator light illuminat ...
Instrument Panel Cluster
Your instrument panel cluster is designed to let you know at a glance how
your vehicle is running. You
will know how fast you are going, about how much fuel you have used, and many
other things y ...