The two diesels tie at 20,000 lb of maximum trailer weight, and on both trucks that is a rating for a truck configured
to reach it. The Silverado 2500HD gets there as a Crew Cab with the long bed, the Duramax and the Max Towing package.
The Ram 2500 gets there with the Cummins High Output, its 8-speed TorqueFlite HD automatic and the 3.42 rear axle, on
a Regular Cab 4x4 with the 8-ft box or a Crew Cab 4x2 with either box, in Tradesman or Big Horn/Lone Star trim.
The Silverado 2500HD carries a separate rating for gooseneck and 5th-wheel work, apart from its conventional maximum:
22,430 lb with the diesel in a 2WD Regular Cab with Max Towing fitted, and 22,070 lb on a Crew Cab equipped the same
way.
On the gas engine Ram lists the higher payload, 3,930 lb on a 4x2 Regular Cab, 8-ft box and 4.10 axle, against up to
3,689 lb on the Silverado 2500HD in a rear-drive Regular Cab. Those two are close to a matched pair, both gas
rear-drive Regular Cabs at the work end of each range.
Both sets of figures describe a maximum on a specific truck. Cab, box, drivetrain, engine, and axle ratio all move the
rating, and the number that governs your trailer is the one on the build sheet of the truck you are buying. Bring the
loaded weight of your trailer rather than its dry weight and we will check it against a specific truck.