New (to me) Yukon question

[pka2112]

Hey everyone! I just purchased a 2005 Yukon (30k miles) that has been customized by the prior owner. They did what appears to be a really nice job (20" Foose wheels, de-racked, lowerd a few inches and custom trim, Force 10 brakes). Inside,among other things, they added head rest monitors and a KEC DVD player (not the best but ok).

My problem is, I can get the video to work, but no audio. I've clicked through all the "modes" on the main stereo unit, the rear entertainment, added headphones....but no audio. I get no option for Aux or rear entertainment. It has the factory 6 disc, XM, but no GPS. I did some research on the DVD player and it doesn't appear they were wireless headphones. Does anyone have any suggestions? For the life of me, I can't figure this out. I've added some pics to my profile. Let me know if you have any thoughts! THANKS

 

[sumo]

Oh thats probally because its not hooked into the aux. I bought my tahoe and it had a alpine res system. It took me awhile to figure it out but on my alpine it uses a Fm transmitter. Look on your system to see if there is a FM button. If so turn it on, pop in a dvd and start Scanning your Fm channels. I found mine in the low 80s. 89.1fm or something like that.