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:
Tire Messages
TIRE PRESSURE LOW ADD AIR TO TIRE
On vehicles with the Tire Pressure Monitor System (TPMS), this message displays when the pressure in one or more of the vehicle's tires is low.
The low tire pressur ...
Services Specific to Canadian
Purchased Vehicles
• Fuel delivery: Reimbursement is approximately
$5 Canadian. Diesel fuel delivery may be restricted.
Propane and other fuels are not provided through
this service.
• Lock-Out Service: Vehicl ...
Electrical System Overload
The vehicle has fuses and circuit breakers to protect against an electrical system overload.
When the current electrical load is too heavy, the circuit breaker opens and closes, protecting the circui ...