Specs, fitment, and towing for the 2024 GMC Sierra 2500HD (6.6L Duramax diesel (2WD, Max Trailering)).
Last verified: 2026-06-02
Source: https://www.gmc.com/trucks/sierra/2500hd-3500hd — live source confirmed
Source live-checked today. The spec table below is this exact trim's published figures; where the source lists a lineup headline max, only the top trim reaches it. Snippet seen on source: "## AVAILABLE TOW UP TO"
| Spec | Value |
|---|---|
| Engine | 6.6L Duramax turbo-diesel V8 (L5P) |
| Horsepower | 470 hp |
| Torque | 975 lb-ft |
| Max towing | 22,500 lb (conventional) |
| Max payload | 3,979 lb |
| GVWR | up to 11,350 lb |
| Curb weight | approx 7,500 lb |
| Bed lengths | 6.75 ft / 8 ft |
The 2500HD's 22,500 lb is a conventional/5th-wheel max on the 470 hp Duramax with the Max Trailering package (single-rear-wheel only); for the 36,000 lb gooseneck numbers you must step up to the 3500HD DRW. A loaded Denali Ultimate crew cab tows less than the headline.
SpecVault — every spec, every trim. Auto-refreshed each model year.
Data compiled from manufacturer & reference sources; verify against your owner's manual before relying on towing/GVWR figures.