See also:

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 acce ...

Setting Preset PTYs (RDS Only)
These pushbuttons have factory PTY presets. Up to 12 PTYs (six FM1 and six FM2), can be programmed on the six numbered pushbuttons, by performing the following steps: 1. Press BAND to select F ...

Automatic Operation
AUTO (Automatic Fan): When AUTO is selected on the fan control, the system automatically adjusts the fan speed. If the OnStar® system is activated when this position is selected, the fan speed ...