Start with the trailer on its heaviest travel day. Record its loaded weight, the load on the hitch, the people riding along and the equipment that stays in the bed. A truck can run out of payload before it reaches its trailer-weight limit.
Can a Sierra 2500HD handle your loaded trailer?
GMC lists a maximum available trailer rating of 23,100 pounds for a properly equipped 2027 Sierra HD 2500. That is a model-line maximum. Match the rating for your hitch type, cab, bed, drivetrain and exact truck before buying.
How to use the payload label
Suppose the hitch equipment, people and bed cargo together weigh 800 pounds. Subtract that amount from the payload on the truck’s own label before comparing the remaining capacity with the loaded trailer’s tongue or pin weight. Use measured weights for your actual setup.
Gas or diesel for your route?
GM announced an available 8.3L Duramax Turbo-Diesel V8 rated at 555 horsepower and 1,230 lb.-ft. of torque, plus an enhanced 6.6L gasoline V8 rated at 412 horsepower and 472 lb.-ft. of torque. Both pair with an Allison 10-speed transmission. Verify vehicle-specific trailering and payload limits. GM announcement, September 24, 2026.
Bring the trailer ratings, hitch type and the truck stock number for a configuration check. Contact Circle Buick GMC in Highland or call 219-227-4410.
Related buying guides
Compare our Sierra truck buying guide and model research center.