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Here Are The 2025 GMC Sierra HD Towing Capacities

With only a few minor updates and changes introduced with the new model year, the 2025 GMC Sierra HD towing capacities are only slightly different from those offered by the refreshed 2024 GMC Sierra HD. Only a handful of max trailer weights have changed since 2024, with most of the figures for 2025 GMC Sierra HD towing carrying forward unaltered like other features of the previous model year.

Side view of the 2025 GMC Sierra HD towing.
To get a better understanding of what the pickup is working with, two powerplants are offered for the 2025 GMC Sierra HD. Both of these engines got an update to accompany the mid-cycle refresh debuted in 2024. Motivation is provided standard by the naturally aspirated 6.6L V8 L8T gasoline engine, which continues to offer an output of 401 horsepower at 5,200 rpm and 464 pound-feet of torque at 4,000 rpm. The Allison-branded 10-speed automatic transmission now serves for gasoline-engine equipped Sierra HD cog swaps, replacing the pre-refresh GM six-speed automatic transmission.

Optionally, the 6.6L V8 L5P turbodiesel Duramax engine can be equipped in the 2025 GMC Sierra HD, providing power amounting to 470 horsepower at 2,800 rpm and 975 pound-feet of torque at 1,600 rpm. Before the refresh, the same diesel powerplant was rated at 445 horsepower and 910 pound-feet of torque. Matching the standard gasoline engine, the diesel-powered engine is also paired with the Allison-branded 10-speed automatic transmission.

With the preliminaries covered, let’s take a closer look at the 2025 GMC Sierra HD towing capacities:

2025 GMC Sierra 2500 HD Towing Chart with Ball Hitch

ModelDrivetrain6.6L V8 L8TTurbo-Diesel 6.6L V8 L5P
Axle RatioMax Trailer Weight (lbs / kg)Axle RatioMax Trailer Weight (lbs / kg)
Crew Cab Standard Bed2WD3.7316,000 / 7,2583.4218,500 / 8,392
Crew Cab Standard Bed Pro, SLE And SLT With NHT12WD--3.4220,000 / 9,072
Crew Cab Standard Bed4WD3.7316,000 / 7,2583.4218,500 / 8,392
Crew Cab Standard Bed Pro, SLE And SLT With NHT14WD--3.4220,000 / 9,072
Crew Cab Standard Bed AT44WD3.7316,000 / 7,2583.4218,500 / 8,392
Crew Cab Standard Bed AT4X4WD3.7316,000 / 7,2583.4218,500 / 8,392
Crew Cab Standard Bed AT4X AEV Edition4WD3.7316,000 / 7,2583.4218,400 / 8,346
Crew Cab Standard Bed Denali4WD3.7316,000 / 7,2583.4218,500 / 8,392
Crew Cab Standard Bed Denali With NHT14WD--3.4220,000 / 9,072
Crew Cab Standard Bed Denali Ultimate4WD--3.4218,500 / 8,392
Crew Cab Standard Bed Denali Ultimate With NHT14WD--3.4220,000 / 9,072
Crew Cab Long Bed2WD3.7316,000 / 7,2583.4218,500 / 8,392
Crew Cab Long Bed Pro, SLE And SLT With NHT12WD--3.4220,000 / 9,072
Crew Cab Long Bed4WD3.7316,000 / 7,2583.4218,500 / 8,392
Crew Cab Long Bed Pro, SLE And SLT With NHT14WD--3.4220,000 / 9,072
Crew Cab Long Bed AT44WD--3.4218,500 / 8,392
Crew Cab Long Bed Denali4WD3.7316,000 / 7,2583.4218,500 / 8,392
Crew Cab Long Bed Denali With NHT14WD--3.4220,000 / 9,072
Crew Cab Long Bed Denali Ultimate4WD--3.4218,500 / 8,392
Crew Cab Long Bed Denali Ultimate With NHT14WD--3.4220,000 / 9,072
Double Cab Standard Bed2WD3.7314,500 / 6,5773.4214,500 / 6,577
Double Cab Standard Bed4WD3.7314,500 / 6,5773.4214,500 / 6,577
Double Cab Long Bed2WD3.7316,000 / 7,2583.4217,900 / 8,119
Double Cab Long Bed4WD3.7316,000 / 7,2583.4217,600 / 7,983
Regular Cab Long Bed2WD3.7314,500 / 6,5773.4214,500 / 6,577
Regular Cab Long Bed Pro, SLE And SLT With NHT12WD--3.4214,500 / 6,577
Regular Cab Long Bed4WD3.7314,500 / 6,5773.4214,500 / 6,577
Regular Cab Long Bed Pro, SLE And SLT With NHT14WD--3.4214,500 / 6,577
1. Optional NHT Max Trailering Package

2025 GMC Sierra 2500 HD Towing Chart with 5th Wheel or Gooseneck Hitch

ModelDrivetrain6.6L V8 L8TTurbo-Diesel 6.6L V8 L5P
Axle RatioMax Trailer Weight (lbs / kg)Axle RatioMax Trailer Weight (lbs / kg)
Crew Cab Standard Bed2WD3.7318,500 / 8,3923.4219,200 / 8,709
Crew Cab Standard Bed Pro, SLE And SLT With NHT12WD--3.4221,510 / 9,757
Crew Cab Standard Bed4WD3.7318,500 / 8,3923.4219,100 / 8,664
Crew Cab Standard Bed Pro, SLE And SLT With NHT14WD--3.4221,600 / 9,798
Crew Cab Standard Bed AT44WD3.7318,000 / 8,1653.4217,300 / 7,847
Crew Cab Standard Bed AT4 With NHT14WD--3.4220,800 / 9,435
Crew Cab Standard Bed AT4X4WD3.7318,000 / 8,1653.4217,300 / 7,847
Crew Cab Standard Bed AT4X AEV Edition4WD3.7316,200 / 7,3483.4214,800 / 6,713
Crew Cab Standard Bed Denali4WD3.7318,000 / 8,1653.4217,600 / 7,983
Crew Cab Standard Bed Denali With NHT14WD--3.4219,900 / 9,027
Crew Cab Standard Bed Denali Ultimate4WD--3.4217,200 / 7,802
Crew Cab Standard Bed Denali Ultimate With NHT14WD--3.4219,300 / 8,754
Crew Cab Long Bed2WD3.7318,500 / 8,3923.4219,200 / 8,709
Crew Cab Long Bed Pro, SLE And SLT With NHT12WD--3.4221,870 / 9,920
Crew Cab Long Bed4WD3.7318,280 / 8,2923.4219,000 / 8,618
Crew Cab Long Bed Pro, SLE And SLT With NHT14WD--3.4221,500 / 9,752
Crew Cab Long Bed AT44WD3.7317,900 / 8,1193.4218,000 / 8,165
Crew Cab Long Bed AT4 With NHT14WD--3.4221,190 / 9,612
Crew Cab Long Bed Denali4WD3.7317,900 / 8,1193.4218,400 / 8,346
Crew Cab Long Bed Denali With NHT14WD--3.4219,820 / 8,990
Crew Cab Long Bed Denali Ultimate4WD--3.4217,900 / 8,119
Crew Cab Long Bed Denali Ultimate With NHT14WD--3.4219,190 / 8,705
Double Cab Standard Bed2WD3.7318,600 / 8,4373.4218,100 / 8,210
Double Cab Standard Bed4WD3.7318,200 / 8,2563.4217,700 / 8,029
Double Cab Long Bed2WD3.7318,400 / 8,3463.4217,900 / 8,119
Double Cab Long Bed4WD3.7318,000 / 8,1653.4217,700 / 8,029
Regular Cab Long Bed2WD3.7318,700 / 8,4823.4218,400 / 8,346
Regular Cab Long Bed Pro, SLE And SLT With NHT12WD--3.4222,390 / 10,156
Regular Cab Long Bed4WD3.7318,300 / 8,3013.4218,200 / 8,256
Regular Cab Long Bed Pro, SLE And SLT With NHT14WD--3.4222,000 / 9,979
1. Optional NHT Max Trailering Package

2025 GMC Sierra 3500 HD Towing Chart with Ball Hitch

ModelDrivetrain6.6L V8 L8TTurbo-Diesel 6.6L V8 L5P
Axle RatioMax Trailer Weight (lbs / kg)Axle RatioMax Trailer Weight (lbs / kg)
Crew Cab Standard Bed SRW2WD3.7316,000 / 7,2583.4220,000 / 9,072
Crew Cab Standard Bed SRW4WD3.7316,000 / 7,2583.4220,000 / 9,072
Crew Cab Standard Bed AT4 SRW4WD3.7316,000 / 7,2583.4220,000 / 9,072
Crew Cab Standard Bed Denali SRW4WD3.7316,000 / 7,2583.4220,000 / 9,072
Crew Cab Standard Bed Denali Ultimate SRW4WD--3.4220,000 / 9,072
Crew Cab Long Bed SRW2WD3.7316,000 / 7,2583.4220,000 / 9,072
Crew Cab Long Bed DRW2WD3.7318,200 / 8,2563.4220,000 / 9,072
Crew Cab Long Bed SRW4WD3.7316,000 / 7,2583.4220,000 / 9,072
Crew Cab Long Bed AT4 SRW4WD3.7316,000 / 7,2583.4220,000 / 9,072
Crew Cab Long Bed Denali SRW4WD3.7316,000 / 7,2583.4220,000 / 9,072
Crew Cab Long Bed Denali Ultimate SRW4WD--3.4220,000 / 9,072
Crew Cab Long Bed DRW4WD3.7317,800 / 8,0743.4220,000 / 9,072
Crew Cab Long Bed Denali DRW4WD3.7317,500 / 7,9383.4220,000 / 9,072
Crew Cab Long Bed Denali Ultimate DRW4WD--3.4220,000 / 9,072
Double Cab Long Bed SRW2WD3.7316,000 / 7,2583.4220,000 / 9,072
Double Cab Long Bed DRW2WD3.7318,300 / 8,3013.4220,000 / 9,072
Double Cab Long Bed SRW4WD3.7316,000 / 7,2583.4220,000 / 9,072
Double Cab Long Bed DRW4WD3.7318,000 / 8,1653.4220,000 / 9,072
Regular Cab Long Bed SRW2WD3.7314,500 / 6,5773.4214,500 / 6,577
Regular Cab Long Bed DRW2WD3.7318,700 / 8,4823.4220,000 / 9,072
Regular Cab Long Bed DRW With NHT12WD--3.4220,000 / 9,072
Regular Cab Long Bed SRW4WD3.7314,500 / 6,5773.4214,500 / 6,577
Regular Cab Long Bed DRW4WD3.7318,400 / 8,3463.4220,000 / 9,072
1. Optional NHT Max Trailering Package

2025 GMC Sierra 3500 HD Towing Chart with 5th Wheel or Gooseneck Hitch

ModelDrivetrain6.6L V8 L8TTurbo-Diesel 6.6L V8 L5P
Regular Cab Long Bed DRW4WD3.7318,380 / 8,3373.4231,500 / 14,288
Axle RatioMax Trailer Weight (lbs / kg)Axle RatioMax Trailer Weight (lbs / kg)
Crew Cab Standard Bed SRW2WD3.7318,650 / 8,4603.4221,900 / 9,934
Crew Cab Standard Bed SRW4WD3.7318,300 / 8,3013.4221,600 / 9,798
Crew Cab Standard Bed AT4 SRW4WD3.7317,900 / 8,1193.4221,300 / 9,662
Crew Cab Standard Bed Denali SRW4WD3.7317,900 / 8,1193.4221,200 / 9,616
Crew Cab Standard Bed Denali Ultimate SRW4WD--3.4221,100 / 9,571
Crew Cab Long Bed SRW2WD3.7318,510 / 8,3963.4222,070 / 10,011
Crew Cab Long Bed DRW2WD3.7318,230 / 8,2693.4231,440 / 14,261
Crew Cab Long Bed SRW4WD3.7318,230 / 8,2693.4221,460 / 9,734
Crew Cab Long Bed AT4 SRW4WD3.7317,800 / 8,0743.4221,200 / 9,616
Crew Cab Long Bed Denali SRW4WD3.7317,800 / 8,0743.4221,100 / 9,571
Crew Cab Long Bed Denali Ultimate SRW4WD--3.4221,000 / 9,526
Crew Cab Long Bed DRW4WD3.7317,800 / 8,0743.4231,000 / 14,062
Crew Cab Long Bed Denali DRW4WD3.7317,500 / 7,9383.4230,800 / 13,971
Crew Cab Long Bed Denali Ultimate DRW4WD--3.4230,700 / 13,926
Double Cab Long Bed SRW2WD3.7318,620 / 8,4463.4221,900 / 9,934
Double Cab Long Bed DRW2WD3.7318,300 / 8,3013.4231,580 / 14,325
Double Cab Long Bed SRW4WD3.7318,310 / 8,3053.4221,590 / 9,793
Double Cab Long Bed DRW4WD3.7317,990 / 8,1603.4231,270 / 14,184
Regular Cab Long Bed SRW2WD3.7319,080 / 8,6553.4222,420 / 10,170
Regular Cab Long Bed DRW2WD3.7318,760 / 8,5103.4235,500 / 16,1032
Regular Cab Long Bed DRW With NHT12WD--3.4236,000 / 16,3302
Regular Cab Long Bed SRW4WD3.7318,700 / 8,4823.4222,040 / 9,997

Looking closely at the 2025 GMC Sierra HD towing capacities, only a handful of changes from 2024 figures stand out. Some cab, engine, and bed combinations of the 2500 HD have seen their towing capacity drop by 10 to 190 pounds from the previous model year, mostly with a gooseneck hitch or 5th wheel. Similar minor changes are present in a handful of 3500 HD configurations.

As with 2024, a gooseneck trailer hitch on the 2WD 3500 HD Regular Cab / Long Bed DRW (Dual Rear Wheel) configuration gives the highest 2025 GMC Sierra HD towing capacity at 36,000 pounds. Several configurations of the pickup have a 14,500-pound capacity, the lowest for the model.

Rear three quarters view of the GMC Sierra HD towing hitch.
As a reminder, the Sierra HD continues to be underpinned by a more robust variant of the GM T1 platform. The heavy-duty pickup is produced at a single facility, the GM Flint plant in Michigan.

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Comments

  1. Why does my 2024 gmc 2500hd denali get bad gas milage (20.5) and my 2015 2500hd ltz gets (24-25) and felt like it had less turbo lag and more take off power. It would actualy spin the tire from a stop sign while pulling a 8000 lb trailer. 2024 won’t come close to the 2015. To much turbo lag.

    Reply
    1. Mine also has horrible turbo lag, I am not impressed at all with the gen 2 L5P

      Reply
      1. Manually select 1st gear and it will!!

        Reply
  2. …and, Tow Ratings are based on the truck having an empty bed, and an empty cab other than the 200-250lb Driver…

    Reply
  3. The extra $10k for the diesel in the 2500 HD is not worth it for a measly 2500 lbs more towing. The gasser is a better deal.

    Reply

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