I phoned Ford on this very issue a few weeks ago since I wanted to be able to consider the Edge, Mk X and Mk Z. Asked them for a definitive answer. They called up the owners manuals and the answer is NO - not towable 4 down. It states clearly that the FWD must have the front wheels on a dolly and the AWD must have the entire vehicle on a trailer.
I then found the 2007 manuals in the fleet section of Ford's web site, downloaded them and read the same paragraphs read to me over the phone.
https://www.fleet.ford.com/maintenan...ls/results.asp
This afternoon at 3pm I picked up a 2007 Tahoe LTZ 4wd with virtuall every option except for reclining buckets in the second row. Ford was not even in the running.
Now I've got to get tow brackets for the Tahoe. Blux Ox says 1 hour installation time - all I've been getting is quotes that are clearly allowing 3 hours.
Don