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:
PARKING ASSIST OFF
After the vehicle has been started,
this message displays to remind the
driver that the URPA system has
been turned off. This message also
displays when there is a temporary
condition causin ...
When to Check Lubricant
Refer to Maintenance Schedule to determine how often to check the
lubricant. ...
Tire Pressure Monitor
System
The Tire Pressure Monitor System
(TPMS) uses radio and sensor
technology to check tire pressure
levels. The TPMS sensors monitor
the air pressure in your tires and
transmit tire pressure rea ...






