TTY Users
OnStar has the ability to communicate to the deaf, hard–of–hearing, or speech–impaired customers while in the vehicle.
The available dealer–installed TTY system can provide in-vehicle access to all of the OnStar services, except Virtual Advisor and OnStar Turn–by–Turn Navigation.
See also:
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 v ...
Extending Engine Run Time
To extend the engine run time by
10 minutes, repeat Steps 1 and 2
while the engine is still running.
The engine run time can only be
extended if it is the first remote start
since the vehicle ...
Power Steering Fluid
See Engine Compartment Overview for reservoir location. ...