Making a Call
To make a call:
1. Press 
.
2. Select Enter number.
3. Enter the character sequence.
See “Entering a Character Sequence” in Operation for more information.
4. Select Call to start dialing the number.
See also:
Cellular and GPS Antennas
Avoid placing items over or near the
antenna to prevent blocking cellular
and GPS signal reception. Cellular
reception is required for OnStar to
send remote signals to the vehicle. ...
Customer Assistance for TextTelephone (TTY) Users
To assist customers who are deaf, hard of
hearing, or speech-impaired and who use Text
Telephones (TTYs), Buick has TTY equipment
available at its Customer Assistance Center. Any
TTY user can comm ...
Radio Messages
Calibration Error: The audio system has been
calibrated for the vehicle from the factory. If Calibration
Error displays, it means that the radio has not been
configured properly for the vehicle ...