Hello first of all I would like to say I love this forurm it has some good info. It help me out buying my new EXT. Man do I love it. I have been searching the forums and I couldn't find any info. Is there an option code for the Invison dvd headrests for the 04 escalades or is it just a aftermarket dealer item thanks. Corey

Aftermarket item. The only factory installed system was ceiling mounted.

So, for the headrest setup, either dealer done or installed by someone else, of various brands and models.

Thanks for the info the guy I bought the truck from said it was done at the dealership when he bought the truck new so I wondered if it was a option. The problem I am having with the headrests the ratchet portion is not working properly it wont lock.