2008 GMC Sierra 1500 Pickup Owner's Manual - Page 228

Playing a DVD DVD/CD AUX (Auxiliary): Press 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 displays when a disc is in either slot. Press again and the system automatically searches for an auxiliary input device, such as a portable audio player. If a portable audio player is not connected, "No Aux Input Device" displays. If a disc is in both the DVD slot and the CD slot the DVD/CD AUX button cycles between the two sources and not indicate "No Aux Input Device". If a front auxiliary device is connected, the DVD/CD AUX button cycles through all available options, such as: DVD slot, CD slot, Front Auxiliary, and Rear Auxiliary (if available). See "Using the Auxiliary Input Jack(s)" later in this section, or "Audio/Video (A/V) Jacks" under, Rear Seat Entertainment (RSE) System on page 3-109 for more information. O(Power): Press to turn the radio on or off. Turn clockwise or counterclockwise to increase or decrease the volume. Press and hold for more than two seconds to turn off the entire radio and Rear Seat Entertainment (RSE) system and to start the parental control feature. Parental control prevents the rear seat occupant from operating the Rear Seat Audio (RSA) system or remote control. A lock symbol displays next to the clock display. The parental control feature remains on until you press and hold this knob for more than two seconds again, or until the driver turns the ignition off and exits the vehicle. f (Tune): Turn to change tracks on a CD or DVD, to manually tune a radio station, or to change clock or date settings, while in the clock or date setting mode. See the information given earlier in this section specific to the radio, CD, and the DVD. Also, see "Setting the Clock" in the index, for setting the clock and date. ©SEEK (Previous Track/Chapter): Press the left arrow to return to the start of the current track or chapter. Press the left arrow again to go to the previous track or chapter. This button might not work when the DVD is playing the copyright information or the previews. 3-92