Should be 500 lbs. tongue weight with a max tongue load of 5,000 lbs, but with the proper hitch up to 10k lbs may be towed.
factory receiver hitch is 4/5 rating witch is 600 load 6000 pull.put weight distribution on and goes to 1000 load and 12000 pull.mine does anyway with 2004 silverado 2500hd 4x4 crew.
Search Chevrolet Silverado 2500HD Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Chevrolet Silverado 2500HD Experts