Index · GMC · Sierra 3500HD
2025 GMC Sierra 3500HD
The cited maximum for a 2025 GMC Sierra 3500HD is 20,000 lb conventional, 36,000 lb gooseneck. Regular cab, 2WD, dual rear wheels, Pro, Duramax, Max Trailering Package.
The build table for 2025 is not transcribed. This page will not multiply trims, cabs, and engines into trucks the order guide did not list.
| Hitch | Cited maximum | Configuration | Source grade |
|---|---|---|---|
| Conventional | 20,000 lb | Regular cab, 2WD, dual rear wheels, Pro, Duramax, Max Trailering Package. | Secondary source |
| Gooseneck | 36,000 lb | Same dual-rear-wheel regular-cab Duramax combination Kelley Blue Book uses for the gooseneck maximum. | Secondary source |
Source: Kelley Blue Book, Maximum Towing Capacity For Every Truck. Published February 21, 2025. KBB configured each 2025 pickup for the published maximum. These figures are not copied onto other model years.
Spec sheet
2 of 25 fields cited; 1 estimate. Field index
Cited fields may cover selected trims or only part of a measurement. Read the configuration and source beside each value; a cited field does not mean every version is researched.
Towing
- Conventional maximum
- 20,000 lb. Regular cab, 2WD, dual rear wheels, Pro, Duramax, Max Trailering Package.Kelley Blue Book source
- Gooseneck maximum
- 36,000 lb. Same dual-rear-wheel regular-cab Duramax combination Kelley Blue Book uses for the gooseneck maximum.Kelley Blue Book source
- Fifth-wheel maximum
- Not transcribed for this model year.
- Tongue or pin load
- 2,000 lb tongue at the 20,000 lb conventional maximum. 5,400 lb pin at the 36,000 lb gooseneck maximum. Illustration at 10 percent conventional and 15 percent in-bed, not a measured load or recommendation. Follow the trailer and vehicle instructions; actual load may be higher.Estimate
- Weight distribution
- Not transcribed for this model year.
- Trailer frontal area
- Not transcribed for this model year.
Weights
- Payload
- Not transcribed for this model year.
- GCWR
- Not transcribed for this model year.
- GVWR
- Not transcribed for this model year.
- Front GAWR
- Not transcribed for this model year.
- Rear GAWR
- Not transcribed for this model year.
- Curb weight
- Not transcribed for this model year.
Body
- Wheelbase
- Not transcribed for this model year.
- Bed length
- Not transcribed for this model year.
- Bed width and depth
- Not transcribed for this model year.
- Cab-to-axle
- Not transcribed for this model year.
- Overall length, width, height
- Not transcribed for this model year.
- Ground clearance and angles
- Not transcribed for this model year.
- Fifth-wheel clearance
- Not transcribed for this model year.
Power
- Engine, horsepower, torque
- Not transcribed for this model year.
- Transmission
- Not transcribed for this model year.
- Fuel type and tank
- Not transcribed for this model year.
- Drivetrain
- Not transcribed for this model year.
- Axle ratio
- Not transcribed for this model year.
- Tow package
- Not transcribed for this model year.
Bed, tongue weight, and wheelbase
The trailer rating is one limit. The bed has to fit the load, the tongue or pin has to fit in payload, and the wheelbase is the column the chart uses.
- An illustrative 10 percent of the 20,000 lb conventional maximum is 2,000 lb of tongue weight. This is not a measured load or recommended percentage; actual load may be higher.
- An illustrative 15 percent of the 36,000 lb gooseneck maximum is 5,400 lb of pin weight. This is not a measured load or recommended percentage; actual load may be higher.
Bed capacity · Tongue and pin weight · Wheelbase · GCWR, GVWR, and GAWR. Wheelbase is not transcribed for this year. GCWR is not transcribed for this year.
Estimate payload margin and bed volume · How these limits work together
Change from 2024
- Conventional is cited for 2025 and was not cited for 2024.
- Gooseneck is cited for 2025 and was not cited for 2024.
Generation
T1XX HD
2025 is year 6 of this generation (2020–2026). Current Sierra 3500HD, including dual-rear-wheel trucks. The 2025 page holds the cited conventional and gooseneck maxima.
What changes the number
- Engine and transmission
- Cab, bed, and wheelbase
- Two-wheel drive, four-wheel drive, or all-wheel drive
- Axle ratio and tow package
- Conventional hitch versus fifth-wheel versus gooseneck
- People, options, and cargo, which spend payload the chart assumed was empty
Questions
- How much can a 2025 GMC Sierra 3500HD tow?
- The cited maximum for a 2025 GMC Sierra 3500HD is 20,000 lb conventional, 36,000 lb gooseneck. Regular cab, 2WD, dual rear wheels, Pro, Duramax, Max Trailering Package.
- Did Sierra 3500HD towing change for 2025?
- Compare the cited 2025 figures on this page with the 2024 record. They are stored separately.
- Which configuration hits the maximum?
- Same dual-rear-wheel regular-cab Duramax combination Kelley Blue Book uses for the gooseneck maximum.
- What tongue weight should I plan for a 2025 Sierra 3500HD?
- At the cited 20,000 lb conventional maximum, an illustrative 10% assumption produces 2,000 lb of tongue weight. This is not a recommended percentage or a measurement; follow your trailer and vehicle instructions and measure the actual load. At the cited 36,000 lb gooseneck maximum, an illustrative 15% assumption produces 5,400 lb of pin weight. This is not a recommended percentage or a measurement; follow your trailer and vehicle instructions and measure the actual load. That load counts against payload and the rear axle rating.
2023 · 2024 · 2026 · All Sierra 3500HD years