When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
In 2003 the H2 could tow up to 7000 lbs, and if you've got a 2008, you can tow up to 8000 lbs. Curb weight of a 2003-04 Discovery is 4800-4900-ish lbs. I think you'll be ok
You would degrade your D2 by towing it with a Hummer!!!!!!!!!!!!!!!!
If nothing else, I would put a ,"Hummer Recovery" sticker on your D2, just so people don't get the wrong idea.