Just traded my 2000 Sierra on an '06 Sierra Denali and wow is thing loaded. It has a dvd player and I havent even tried it yet. But, a fella here at work said I may need to get the factory headphones so my daughters can hear as it won't work without them(like you wouldn't be able to hear the sound without 'em)! Does anyone know about this. I haven't called a dealer yet, thought I'd try here first...Thanks Ed

 

Guess not huh?

 

I don't see why just a normal set of headphones won't work... I think the dealer's just trying to con you into spending money