See also:

Customer Assistance Offices (U.S. and Canada)
GMC encourages customers to call the toll-free number for assistance. However, if a customer wishes to write or e-mail GMC, the letter should be addressed to: United States GMC Customer Assistance ...

Steering Wheel Controls
Steering Wheel Controls If available, some audio controls can be adjusted at the steering wheel. : Press to go to the next favorite radio station, track on a CD, or folder on an iPod® or USB ...

Ejecting a CD (Single CD Player)
EJECT: Press and release to eject the disc. Remove the CD when Remove Disc displays. If the disc is not removed, after several seconds the disc is automatically pulled back into the player. ...