TTY Users
OnStar has the ability to communicate to the deaf, hard&-ofhearing, 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:
Trailer Brakes
Does the trailer have its own brakes? Be sure to read and follow the instructions
for the trailer brakes so they are installed, adjusted, and maintained properly.
Because the vehicle has antilock b ...
Manual Lumbar
Manual Lumbar
If equipped, increase or decrease manual lumbar support by turning the knob forward or rearward. ...
StabiliTrak® System
The vehicle has a vehicle stability enhancement system called StabiliTrak. It is an advanced computer-controlled system that assists the driver with directional control of the vehicle in difficult dri ...





