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:
Exterior Lighting
The exterior lamp control is located on the turn signal/lane change lever.
: Turn to operate the exterior lamps.
: Turns the exterior lamps off.
AUTO: Turns the exterior lamps on and off automat ...
Resuming a Set Speed
If the cruise control is set at a desired speed and then the brakes are applied, the cruise control is disengaged without erasing the set speed from memory.
Once the vehicle speed reaches about 40 km ...
Delayed Headlamps
Delayed headlamps provide a period of exterior lighting as you leave the area around the vehicle.
This feature is activated when the headlamps are on due to the automatic headlamps control feature, a ...





