GMC Sierra 3500HD towing capacity
The 2026 GMC Sierra 3500HD is rated for up to 20,000 lbs with a conventional ball hitch, in its best-equipped configuration. Other configurations are rated lower.
Source documents last retrieved October 3, 2026.
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2026 GMC Sierra 3500HD
| Engine | Conventional | Fifth-wheel or gooseneck |
|---|---|---|
| 6.6L Duramax Turbo-Diesel V8 | 20,000 lbs | 36,000 lbs |
| Duramax 6.6L Turbo-Diesel V8 | 20,000 lbs | 36,000 lbs |
| 6.6L V8 Gas | 18,700 lbs | 19,080 lbs |
All 99 2026 Sierra 3500HD configurations, with axle, cab and required equipment
Source: 2026 GM Envolve Fleet Guide; 2026 SIERRA 3500 HD MAX CONVENTIONAL TRAILERING
2025 GMC Sierra 3500HD
| Engine | Conventional | Fifth-wheel or gooseneck |
|---|---|---|
| 6.6L Duramax Turbo-Diesel V8 | 20,000 lbs | 36,000 lbs |
All 14 2025 Sierra 3500HD configurations, with axle, cab and required equipment
Source: 2025 GM Envolve Fleet Guide
2024 GMC Sierra 3500HD
| Engine | Conventional | Fifth-wheel or gooseneck |
|---|---|---|
| 6.6L Duramax Turbo Diesel V8 | 20,000 lbs | 36,000 lbs |
| 6.6L Gas V8 | 18,700 lbs | 19,080 lbs |
All 114 2024 Sierra 3500HD configurations, with axle, cab and required equipment
Source: 2024 GMC Sierra HD Models: Features, Specs and Options
2023 GMC Sierra 3500HD
| Engine | Conventional | Fifth-wheel or gooseneck |
|---|---|---|
| 6.6L Duramax Turbo Diesel V8 | 20,000 lbs | 36,000 lbs |
| 6.6L Gas V8 | 16,800 lbs | 17,200 lbs |
All 105 2023 Sierra 3500HD configurations, with axle, cab and required equipment
Source: 2023 GMC Sierra HD Models: Features, Specs and Options
2022 GMC Sierra 3500HD
| Engine | Conventional | Fifth-wheel or gooseneck |
|---|---|---|
| 6.6L Duramax Turbo Diesel V8 | 20,000 lbs | 36,000 lbs |
| 6.6L Gasoline V8 | 16,800 lbs | 17,200 lbs |
All 105 2022 Sierra 3500HD configurations, with axle, cab and required equipment
Source: 2022 GMC Sierra HD Models: Features, Specs and Options
2021 GMC Sierra 3500HD
| Engine | Conventional | Fifth-wheel or gooseneck |
|---|---|---|
| 6.6L Duramax Turbo Diesel V8 | 20,000 lbs | 36,000 lbs |
| 6.6L Gas V8 | 16,800 lbs | 17,200 lbs |
All 105 2021 Sierra 3500HD configurations, with axle, cab and required equipment
Source: 2021 GMC Trailering Guide
2020 GMC Sierra 3500HD
| Engine | Conventional | Fifth-wheel or gooseneck |
|---|---|---|
| DURAMAX TURBO DIESEL | 20,000 lbs | 35,500 lbs |
| GAS ENGINE | 16,800 lbs | 17,200 lbs |
All 84 2020 Sierra 3500HD configurations, with axle, cab and required equipment
Source: 2020 GMC Trailering Guide
2019 GMC Sierra 3500HD
| Engine | Conventional | Fifth-wheel or gooseneck |
|---|---|---|
| DURAMAX 6.6L V8 TURBO DIESEL | 20,000 lbs | 23,100 lbs |
| VORTEC 6.0L V8 | 14,200 lbs | 14,300 lbs |
All 24 2019 Sierra 3500HD configurations, with axle, cab and required equipment
Source: 2019 GMC Trailering Guide
2018 GMC Sierra 3500HD
| Engine | Conventional | Fifth-wheel or gooseneck |
|---|---|---|
| DURAMAX 6.6L V-8 TURBO DIESEL | 20,000 lbs | 23,300 lbs |
| VORTEC 6.0L V-8 | 14,500 lbs | 14,600 lbs |
All 76 2018 Sierra 3500HD configurations, with axle, cab and required equipment
Source: 2018 GMC Trailering Guide
2017 GMC Sierra 3500HD
| Engine | Conventional | Fifth-wheel or gooseneck |
|---|---|---|
| DURAMAX 6.6L V-8 TURBO DIESEL | 20,000 lbs | 23,300 lbs |
| VORTEC 6.0L V-8 | 14,500 lbs | 14,600 lbs |
All 76 2017 Sierra 3500HD configurations, with axle, cab and required equipment
Source: 2017 GMC Trailering Guide
2016 GMC Sierra 3500HD
| Engine | Conventional | Fifth-wheel or gooseneck |
|---|---|---|
| DURAMAX 6.6L V-8 TURBO DIESEL | 20,000 lbs | 23,200 lbs |
| VORTEC 6.0L V-8 | 14,500 lbs | 14,600 lbs |
All 83 2016 Sierra 3500HD configurations, with axle, cab and required equipment
Source: 2016 GMC Trailering Guide
2015 GMC Sierra 3500HD
| Engine | Conventional | Fifth-wheel or gooseneck |
|---|---|---|
| DURAMAX 6.6L V-8 TURBO DIESEL | 19,600 lbs | 23,200 lbs |
| VORTEC 6.0L V-8 | 14,200 lbs | 14,600 lbs |
All 83 2015 Sierra 3500HD configurations, with axle, cab and required equipment
Source: 2015 GMC Trailering Guide
Common questions
How has the GMC Sierra 3500HD's towing capacity changed by year?
Highest published rating by model year: 2026: 20,000 lbs; 2025: 20,000 lbs; 2024: 20,000 lbs; 2023: 20,000 lbs; 2022: 20,000 lbs; 2021: 20,000 lbs; 2020: 20,000 lbs; 2019: 20,000 lbs; 2018: 20,000 lbs; 2017: 20,000 lbs; 2016: 20,000 lbs; 2015: 19,600 lbs.