Dual Tone Multi-Frequency (DTMF) Tones
The in-vehicle Bluetooth system can send numbers during a call. This is used when calling a menu-driven phone system.
1. Turn the Menu knob to select Enter Number, then press SELECT.
2. Enter the character sequence.
See “Entering a Character Sequence” in Operation for more information.
See also:
Power Lumbar
On vehicles with power lumbar, the control is located on
the outboard side of the front seats.
For vehicles with a two-way lumbar control, press the
control top or bottom to increase or decreas ...
Your Responsibility
Increase the volume of the radio if the OnStar advisor
cannot be heard.
If the light next to the OnStar buttons is red, the system
may not be functioning properly. Press
and request
a vehicle ...
Cold Temperature Operation
If in an area of extreme cold, where the temperature
falls below −20°F (−29°C), use either an SAE 5W-30
synthetic oil or an SAE 0W-30 engine oil. Both provide
easier cold starting ...
