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:
Driving for Better Fuel Economy
Driving habits can affect fuel mileage. Here are some driving tips to get the best fuel economy possible.
► Avoid fast starts and accelerate smoothly.
► Brake gradually and avoid abrupt ...
When the System Does Not Seem
to Work Properly
Occasional missed alerts can occur
under normal circumstances and will
increase in wet conditions. The
system does not need to be
serviced due to an occasional
missed alert. The number of mi ...
Courtesy Lamps
The courtesy lamps come on automatically when any door is opened and the dome
lamp is in the door position. ...