Model research hub
GMC Sierra 2500HD
TowingSpecs.com says the 2026 GMC Sierra 2500HD tows up to 22,420 lbs from the Duramax 6.6L configuration with Max Trailering, and as little as 18,700 lbs at the base, so configuration is everything. TrailerPlace says the 2026 Sierra 2500HD comes with a factory-installed 2-5/16-inch ball hitch receiver and a built-in brake controller in most trim levels, SLT and above. Truck Report Geeks says the 2026 GMC Sierra 2500HD is designed for serious towing, hard work, and long-distance hauling, and when properly configured with the Duramax diesel can tow up to 22,390 lbs, putting it among the top performers in the heavy-duty class, continuing to lead in towing power, tech, and refinement.
Towing capacity by configuration
TowingSpecs.com (opens in a new tab) says the 2026 GMC Sierra 2500HD tows up to 22,420 lbs from the Duramax 6.6L configuration with Max Trailering, and as little as 18,700 lbs at the base trim, so configuration is everything for maximum capability.
Standard towing hardware
TrailerPlace (opens in a new tab) says the 2026 Sierra 2500HD comes with a factory-installed 2-5/16-inch ball hitch receiver and a built-in brake controller in most trim levels, SLT and above.
Among the top performers in its class
Truck Report Geeks (opens in a new tab) says the 2026 GMC Sierra 2500HD is designed for serious towing, hard work, and long-distance hauling, and when properly configured with the Duramax diesel can tow up to 22,390 lbs, putting it among the top performers in the heavy-duty class.
Questions buyers ask
How much can the GMC Sierra 2500HD tow?
TowingSpecs.com (opens in a new tab) says up to 22,420 lbs with the Duramax diesel and Max Trailering package.
Does the Sierra 2500HD have a built-in brake controller?
TrailerPlace (opens in a new tab) says yes, standard on SLT trim and above.
Research map
Every major decision path.
The 2026 GMC Sierra 2500HD is built around 6.6L V8 gas or 6.6L Duramax turbo-diesel V8, rated at 401 / 470 horsepower across its heavy-duty full-size pickup body style.
Explore this topic →02Trims and equipmentThe 2026 U.S. lineup has 7 trims.
Explore this topic →03Towing and capabilityThe most the 2026 GMC Sierra 2500HD is published to tow is up to 22,500 lb (properly equipped).
Explore this topic →04Safety and ownershipNHTSA recalls, complaints and crash ratings for the 2026 Sierra 2500HD.
Explore this topic →Current model year
2026 GMC Sierra 2500HD
The 2026 Sierra 2500HD is a distinct heavy-duty chassis from the light-duty Sierra 1500, not a higher trim of it. The 6.6L gas V8 (401 hp) is standard on Pro through SLT; the 6.6L Duramax turbo-diesel V8 (470 hp, 975 lb-ft) is available across the range. RWD is offered only on base Pro; every other trim is 4WD-only.
Read specifications, trims, answers and sourcesModel-year archive
1 indexed GMC Sierra 2500HD model years.
| Model year | Trims | Open record |
|---|---|---|
| 2026 GMC Sierra 2500HD | 2026 record → |
Background and safety record
What public sources say about the GMC Sierra 2500HD.
The GMC Sierra 2500HD is built alongside the Chevrolet Silverado 1500, and public records cover the two together. Generation history, the fact box and background are on the Chevrolet Silverado 1500 page; the safety record for the GMC Sierra 2500HD itself follows.
Trim by trim
Every 2026 GMC Sierra 2500HD trim side by side.
| Trim | Drive | Engine | Horsepower | Torque (lb-ft) | Curb weight (lb) | Max towing (lb) | Combined mpg | Base price |
|---|---|---|---|---|---|---|---|---|
| Pro (Pickup) | 4WD | 6.6-liter V8 | 401 | 464 | 6,614 | 22,050 | – | – |
| Pro (Pickup) | 4WD | 6.6-liter V8 | 401 | 464 | 7,022 | 18,000 | – | – |
| Pro (Pickup) | 4WD | 6.6-liter V8 | 401 | 464 | 7,111 | 20,000 | – | – |
| SLE (Pickup) | 4WD | 6.6-liter V8 | 401 | 464 | 6,614 | 22,050 | – | – |
| SLE (Pickup) | 4WD | 6.6-liter V8 | 401 | 464 | 7,022 | 18,000 | – | – |
| SLE (Pickup) | 4WD | 6.6-liter V8 | 401 | 464 | 7,111 | 20,000 | – | – |
| SLT | 4WD | 6.6-liter V8 | 401 | 464 | 7,111 | 20,000 | – | $67,295 |
| AT4 | 4WD | 6.6-liter V8 | 401 | 464 | 7,482 | 18,500 | – | $74,195 |
| Denali | 4WD | 6.6-liter V8 | 401 | 464 | 7,111 | 20,000 | – | $77,595 |
| AT4X | 4WD | 6.6-liter V8 | 401 | 464 | 7,502 | 18,500 | – | $86,295 |
| Denali Ultimate | 4WD | 6.6-liter V8 (Turbo Diesel) | 470 | 975 | 8,353 | 20,000 | – | $96,395 |
Source: Kelley Blue Book specifications for the 2026 model year; base price is KBB's national base price where its list carries the trim by the same name. A dash means KBB lists no figure.
Compared with
Models this GMC Sierra 2500HD is most often compared with.
Nearest GMC models
Other GMC models.
Frequent questions
Answers with their conditions intact.
Q01How many trims does the 2026 Sierra 2500HD come in?
The 2026 GMC Sierra 2500HD (heavy-duty full-size pickup) comes in 7 trims: Pro, SLE, SLT, AT4, AT4X, Denali, Denali Ultimate.
Q02What are the 2026 Sierra 2500HD trims?
The 2026 GMC Sierra 2500HD trims are Pro, SLE, SLT, AT4, AT4X, Denali, Denali Ultimate, listed from the entry Pro up to the top Denali Ultimate.
Q03What engine or powertrain does the 2026 Sierra 2500HD use?
The 2026 GMC Sierra 2500HD is built around 6.6L V8 gas or 6.6L Duramax turbo-diesel V8, rated at 401 / 470 horsepower across its heavy-duty full-size pickup body style.
Q04How much horsepower does the 2026 Sierra 2500HD have?
The 2026 GMC Sierra 2500HD is rated at 401 / 470 horsepower (6.6L V8 gas or 6.6L Duramax turbo-diesel V8).
Q05Is AWD or 4WD available on the 2026 Sierra 2500HD?
The 2026 GMC Sierra 2500HD is offered with RWD / 4WD.