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:
Headlamp Washer
For vehicles with headlamp washers, they are located to the side of the
headlamps.
The headlamps must be on in order to use the headlamp washers.
If the headlamps are not on, only the windshiel ...
Storing the Tire Sealant and Compressor Kit
The tire sealant and compressor kit is located under the storage tray on the
driver side trim panel (over the rear wheelhouse).
To access the tire sealant and compressor kit:
1. Remove the tray ...
California Fuel
Requirements
If the vehicle is certified to meet
California Emissions Standards, it is
designed to operate on fuels that
meet California specifications.
See the underhood emission control
label. If this f ...