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:
Engine Oil Messages
CHANGE ENGINE OIL SOON
This message displays when the engine oil needs to be changed.
When you change the engine oil, be sure to reset the CHANGE ENGINE OIL SOON message. See Engine Oil Life System ...
Vehicle Symbol Chart
Here are some additional symbols that may be found on the vehicle and what they mean. For more information on the symbol, refer to the Index.
Adjustable Pedals
Airbag Readiness Light
Air C ...
Noise Control System
The following information relates to compliance with federal noise emission standards for vehicles with a Gross Vehicle Weight Rating (GVWR) of more than 4 536 kg (10,000 lbs). The noise control syste ...





