2026 GMC Sierra 3500 HD Regular CAB towing capacity
The 2026 GMC Sierra 3500 HD Regular CAB is published in 2 configurations with a tow rating of 31,500 lb (heavy-duty fifth-wheel territory).
The table below lists every trim of the 2026 GMC Sierra 3500 HD Regular CAB with the engine, drivetrain, axle ratio, horsepower, torque, GVWR, curb weight, and payload that go with that trim's headline tow rating. Manufacturers often publish more than one tow figure per truck — a conventional bumper-hitch rating, a weight-distributing rating, and a gooseneck or fifth-wheel rating — so the highest number here is the maximum across all hitch classes the source carries for the trim.
Per-trim breakdown
| Configuration | Engine | HP | Torque | Axle | Tow (lb) | GVWR | Curb | Payload |
|---|---|---|---|---|---|---|---|---|
| Pro | V8, 6.6 Liter | 401 | 464 | — | 31,500 | — | 7,015 | — |
| SLE | V8, 6.6 Liter | 401 | 464 | — | 31,500 | — | 7,015 | — |
How to interpret the headline tow figure
Tow figures this high require a gooseneck or fifth-wheel hitch installed in the bed of the truck, and a corresponding trailer setup. Conventional bumper-pull towing on the same vehicle is typically capped well below this number — usually under 15,000 lb. Always check the door-jamb sticker and owner's manual for the maximum permitted on each hitch class before hooking up.
How this year compares to 2025
The 2025 GMC Sierra 3500 HD Regular CAB carried a maximum tow rating of 31,500 lb. The 2026 model carries the same headline figure — manufacturers usually leave the rating alone year-over-year unless there's a powertrain or hitch change. See the 2025 GMC Sierra 3500 HD Regular CAB page for the full per-trim breakdown of the prior year.
Other 2026 GMC models
The rest of GMC's 2026 lineup, ranked by maximum tow rating. Click through for the per-trim breakdown of any of these.
| Model | Max tow (lb) |
|---|---|
| 2026 GMC Sierra 3500 HD Double CAB | 31,270 |
| 2026 GMC Sierra 3500 HD Crew CAB | 31,000 |
| 2026 GMC Sierra 2500 HD Regular CAB | 22,050 |
| 2026 GMC Sierra 2500 HD Crew CAB | 20,000 |
| 2026 GMC Sierra 2500 HD Double CAB | 18,000 |
| 2026 GMC Sierra 1500 Crew CAB | 13,100 |
All figures sourced from manufacturer documentation. See our methodology for how the dataset is compiled. Always confirm against your vehicle's door-jamb sticker before towing.