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:
Drive Systems
All-Wheel Drive
Vehicles with this feature always send engine power to all four wheels. It
is fully automatic, and adjusts itself as needed for road conditions.
When using a compact spare tire ...
What to Use
Refer to Recommended Fluids and Lubricants to determine what kind
of lubricant to use. ...
Towing the Vehicle
Notice: To avoid damage, the disabled vehicle should be towed with all four wheels
off the ground. Care must be taken with vehicles that have low ground clearance
and/or special equipment. Always ...