CD/DVD
To select tracks on a CD/DVD:
Press and release 
or
to go to the next or previous track.
See also:
Customer Assistance for Text Telephone (TTY) Users (U.S. and Canada)
To assist customers who are deaf, hard of hearing, or speech impaired and who use Text Telephones (TTYs), GMC has TTY equipment available at its Customer Assistance Center. Any TTY user can communicat ...
General Information
For service and parts needs, visit your dealer. You will receive genuine GM parts
and GM-trained and supported service people. Genuine GM parts have one of these
marks:
...
Universal Remote System Operation
Press and hold the appropriate button for at least half of a second.
The indicator light will come on while the signal is being transmitted. ...