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:
Steps for Determining Correct Load Limit
1. Locate the statement “The combined weight of occupants and cargo should
never exceed XXX kg or XXX lbs” on your vehicle's placard.
2. Determine the combined weight of the driver and passengers ...
Highway Hypnosis
Always be alert and pay attention to your surroundings while driving. If you
become tired or sleepy, find a safe place to park the vehicle and rest.
Other driving tips include:
Keep the vehicle ...
Transmission Messages
SERVICE TRANSMISSION
This message displays if there is a problem with the transmission.
See your dealer.
SHIFT DENIED
This message displays when using the Driver Shift Control (DSC) and
a ...