Setting the Clock
To set the time and date for the radio with CD, DVD, and USB Port:
1. Turn the ignition key to ACC/ACCESSORY or ON/RUN, then press
to turn the radio on.
2. Press
to display HR, MIN, MM, DD, YYYY (hour, minute, month, day, and year).
3. Press the pushbutton located under any one of the labels to be changed.
4. To increase or decrease the time or date, turn
clockwise or counterclockwise.
For detailed instructions on setting the clock for the vehicle's specific audio system, see Clock on page 5‑8.
See also:
Warranty
OnStar equipment may be warranted as part of the new-vehicle limited warranty.
The manufacturer of the vehicle furnishes detailed warranty information. ...
Interior
The Sierra showcases two different interior designs. Work Truck and SLE
models are more utility-minded, with large controls and door handles that can be
operated while wearing gloves. The SLT offe ...
Muting a Call
During a call, all sounds from inside the vehicle can be muted so that the person on the other end of the call cannot hear them.
• To mute a call, press , and then say “Mute call.” . To cancel ...





