2007 GMC Yukon Owner's Manual - Page 304

DVD/CD AUX (Auxiliary): Press this button to cycle through DVD, CD, or Auxiliary when listening to the radio. The DVD/CD text label and a message showing track or chapter number will appear on display when a disc is in either slot. Press this button again and the system will automatically search for an auxiliary input device, such as a portable audio player. If a portable audio player is not connected, "no aux input device" will be displayed. If a disc is in both the DVD slot and the CD slot the DVD/CD AUX button will cycle between the two sources and not indicate "no aux input device". If a front auxiliary device is connected, the DVD/CD AUX button will cycle through all available options, such as: DVD slot, CD slot, Front AUX, and Rear AUX (if available). See "Using the Auxiliary Input Jack(s)" later in this section, or Rear Seat Entertainment System on page 321, "Audio/Video (A/V) Jacks" for more information. If a disc is inserted into top DVD slot, the rear seat operator can turn on the video screen and use the remote control to navigate the CD (tracks only) through the remote control. Audio Output Only one audio source can be heard through the speakers at one time. An audio source is defined as DVD slot, CD slot, XM™, FM/AM, Front Aux Jack, or Rear Aux Jack. Press the power button to turn the radio on. The radio can be heard through all of the vehicle speakers. Front seat passengers can listen to the radio (AM, FM, or XM) by pressing the BAND button or the DVD/CD AUX button to select CD slot, DVD slot, front or rear auxiliary input (if available). If a playback device is plugged into the radio's front auxiliary input jack or the rear auxiliary jack, the front seat passengers will be able to listen to playback from this source through the vehicle speakers. See "Using the Auxiliary Input Jack(s)" later in this section, or Rear Seat Entertainment System on page 321, "Audio/Video (A/V) Jacks" for more information. In some vehicles, depending on audio options, the rear speakers can be muted when the RSA power is turned on. See Rear Seat Audio (RSA) on page 332 for more information. 304