2007 GMC Yukon Owner's Manual - Page 332

Rear Seat Audio (RSA) This feature allows rear seat passengers to listen to and control any of the music sources: radio, CDs, DVDs, or other auxiliary sources. However, the rear seat passengers can only control the music sources the front seat passengers are not listening to (except on some radios where dual control is allowed). For example, rear seat passengers can listen to and control a CD through the headphones, while the driver listens to the radio through the front speakers. The rear seat passengers have control of the volume for each set of headphones. You can operate the RSA functions even when the main radio is off. Audio can be heard through wired headphones (not included) plugged into the jacks on the RSA. If your vehicle has this feature, audio can also be heard on Channel 2 of the wireless headphones. The audio system mutes the rear speakers when the RSA audio is active through the headphones. P (Power): Press this button to turn the RSA on or off. Volume: Turn this knob to increase or to decrease the volume of the wired headphones. The left knob controls the left headphones and the right knob controls the right headphones. SRCE (Source): Press this button to switch between the radio (AM/FM), XM (if equipped), CD, and if your vehicle has these features, DVD, front auxiliary, and rear auxiliary. 332