2026 GMC Sierra 2500HD towing capacity

Up to 20,000 lbs with a conventional ball hitch. That rating is for this configuration: Crew Cab 2WD 6' 9" box 159 in. conventional, 6.6L Duramax Turbo-Diesel V8, 2WD. The lowest-rated configuration in the same tables is 14,500 lbs, so the answer for your vehicle depends on how it is equipped.

Highest published rating20,000 lbsConventional (ball hitch). Lowest in the same tables: 14,500 lbs.

The top figure belongs to one specific build. Find the row that matches your engine, cab, drive and axle, and check the label on your driver's door jamb. Passengers and cargo in the truck come off what you can tow.

2026 GMC Sierra 2500HD towing capacity by engine

The highest rating published for each engine. Pick a figure to see every configuration behind it.

Engine	Conventional	Fifth-wheel or gooseneck	Configurations
6.6L Duramax Turbo-Diesel V8	20,000 lbs	22,390 lbs	20
Duramax 6.6L Turbo-Diesel V8	20,000 lbs	22,390 lbs	54
6.6L V8 Gas	16,000 lbs	18,700 lbs	43

2026 GMC Sierra 2500HD towing capacity chart

All 117 configurations in the source, by hitch type and engine, highest rating first. Each row links to the page it is printed on.

Conventional (ball hitch)

2026 GMC Sierra 2500HD 6.6L Duramax Turbo-Diesel V8 towing capacity, conventional hitch
Configuration	Drive	Max trailer	Needs	Source
Crew Cab 2WD 6' 9" box 159 in. conventionalfootnote 3: 'Requires 6.6L Duramax Turbo-Diesel V8 engine.'; footnote 4: 'Requires Max Trailering Package.'	2WD	20,000 lbs	6.6L Duramax Turbo-Diesel V8 engine; Max Trailering Package	p. 132
Crew Cab 4WD 6' 9" box 159 in. conventionalfootnote 3: 'Requires 6.6L Duramax Turbo-Diesel V8 engine.'; footnote 4: 'Requires Max Trailering Package.'	4WD	20,000 lbs	6.6L Duramax Turbo-Diesel V8 engine; Max Trailering Package	p. 132
Crew Cab 2WD 8' box 172 in. conventionalfootnote 3: 'Requires 6.6L Duramax Turbo-Diesel V8 engine.'; footnote 4: 'Requires Max Trailering Package.'	2WD	20,000 lbs	6.6L Duramax Turbo-Diesel V8 engine; Max Trailering Package	p. 132
Crew Cab 4WD 8' box 172 in. conventionalfootnote 3: 'Requires 6.6L Duramax Turbo-Diesel V8 engine.'; footnote 4: 'Requires Max Trailering Package.'	4WD	20,000 lbs	6.6L Duramax Turbo-Diesel V8 engine; Max Trailering Package	p. 132
Double Cab 2WD 8' box 162 in. conventionalfootnote 3: 'Requires 6.6L Duramax Turbo-Diesel V8 engine.'	2WD	17,900 lbs	6.6L Duramax Turbo-Diesel V8 engine	p. 132
Double Cab 4WD 8' box 162 in. conventionalfootnote 3: 'Requires 6.6L Duramax Turbo-Diesel V8 engine.'	4WD	17,600 lbs	6.6L Duramax Turbo-Diesel V8 engine	p. 132
Regular Cab 2WD 8' box 142 in. conventionalfootnote 3: 'Requires 6.6L Duramax Turbo-Diesel V8 engine.'	2WD	14,500 lbs	6.6L Duramax Turbo-Diesel V8 engine	p. 132
Regular Cab 4WD 8' box 142 in. conventionalfootnote 3: 'Requires 6.6L Duramax Turbo-Diesel V8 engine.'	4WD	14,500 lbs	6.6L Duramax Turbo-Diesel V8 engine	p. 132
Double Cab 2WD 6' 9" box 149 in. conventionalfootnote 3: 'Requires 6.6L Duramax Turbo-Diesel V8 engine.'	2WD	14,500 lbs	6.6L Duramax Turbo-Diesel V8 engine	p. 132
Double Cab 4WD 6' 9" box 149 in. conventionalfootnote 3: 'Requires 6.6L Duramax Turbo-Diesel V8 engine.'	4WD	14,500 lbs	6.6L Duramax Turbo-Diesel V8 engine	p. 132

2026 GMC Sierra 2500HD Duramax 6.6L Turbo-Diesel V8 towing capacity, conventional hitch
Configuration	Drive	Max trailer	GCWR	Needs	Source
CREW CAB Standard Bed 2WD	2WD	20,000 lbs	30,000 lbs	Max Trailering Package	p. 1
CREW CAB Standard Bed 4WD	4WD	20,000 lbs	30,000 lbs	Max Trailering Package	p. 1
CREW CAB Long Bed 4WD	4WD	20,000 lbs	30,000 lbs	Max Trailering Package	p. 1
CREW CAB Long Bed 2WD	2WD	20,000 lbs	30,300 lbs	Max Trailering Package	p. 1
CREW CAB Standard Bed 2WD	2WD	18,500 lbs	27,500 lbs	18-inch or 20-inch wheels	p. 1
CREW CAB Long Bed 2WD	2WD	18,500 lbs	27,500 lbs	18-inch or 20-inch wheels	p. 1
CREW CAB Standard Bed 4WD	4WD	18,500 lbs	27,500 lbs	18-inch or 20-inch wheels	p. 1
CREW CAB Long Bed 4WD	4WD	18,500 lbs	27,500 lbs	18-inch or 20-inch wheels	p. 1
AT4X AEV Edition, CREW CAB Standard Bed 4WDfootnote 4: AT4X AEV Edition maximum trailer rating	4WD	18,400 lbs	27,500 lbs	18-inch or 20-inch wheels	p. 1
CREW CAB Standard Bed 2WD	2WD	18,000 lbs	26,000 lbs		p. 1
DOUBLE CAB Long Bed 2WD	2WD	17,900 lbs	26,000 lbs		p. 1
CREW CAB Long Bed 2WD	2WD	17,800 lbs	26,000 lbs		p. 1
CREW CAB Standard Bed 4WD	4WD	17,800 lbs	26,000 lbs		p. 1
CREW CAB Long Bed 4WD	4WD	17,700 lbs	26,000 lbs		p. 1
DOUBLE CAB Long Bed 4WD	4WD	17,600 lbs	26,000 lbs		p. 1
DOUBLE CAB Standard Bed 2WD	2WD	14,500 lbs	26,000 lbs		p. 1
DOUBLE CAB Standard Bed 4WD	4WD	14,500 lbs	26,000 lbs		p. 1
REGULAR CAB Long Bed 2WD	2WD	14,500 lbs	26,000 lbs		p. 1
REGULAR CAB Long Bed 4WD	4WD	14,500 lbs	26,000 lbs		p. 1
REGULAR CAB Long Bed 2WD	2WD	14,500 lbs	30,000 lbs	Max Trailering Package	p. 1
REGULAR CAB Long Bed 4WD	4WD	14,500 lbs	30,000 lbs	Max Trailering Package	p. 1

2026 GMC Sierra 2500HD 6.6L V8 Gas towing capacity, conventional hitch
Configuration	Drive	Max trailer	GCWR	Needs	Source
CREW CAB Standard Bed 2WD	2WD	16,000 lbs	26,000 lbs	18-inch or 20-inch wheels	p. 1
CREW CAB Long Bed 2WD	2WD	16,000 lbs	26,000 lbs	18-inch or 20-inch wheels	p. 1
CREW CAB Standard Bed 4WD	4WD	16,000 lbs	26,000 lbs	18-inch or 20-inch wheels	p. 1
CREW CAB Long Bed 4WD	4WD	16,000 lbs	26,000 lbs	18-inch or 20-inch wheels	p. 1
DOUBLE CAB Long Bed 2WD	2WD	16,000 lbs	26,000 lbs	18-inch or 20-inch wheels	p. 1
DOUBLE CAB Long Bed 4WD	4WD	16,000 lbs	26,000 lbs	18-inch or 20-inch wheels	p. 1
CREW CAB Standard Bed 2WD	2WD	14,500 lbs	24,500 lbs		p. 1
CREW CAB Long Bed 2WD	2WD	14,500 lbs	24,500 lbs		p. 1
CREW CAB Standard Bed 4WD	4WD	14,500 lbs	24,500 lbs		p. 1
CREW CAB Long Bed 4WD	4WD	14,500 lbs	24,500 lbs		p. 1
DOUBLE CAB Standard Bed 2WD	2WD	14,500 lbs	24,500 lbs		p. 1
DOUBLE CAB Long Bed 2WD	2WD	14,500 lbs	24,500 lbs		p. 1
DOUBLE CAB Standard Bed 4WD	4WD	14,500 lbs	24,500 lbs		p. 1
DOUBLE CAB Long Bed 4WD	4WD	14,500 lbs	24,500 lbs		p. 1
REGULAR CAB Long Bed 2WD	2WD	14,500 lbs	24,500 lbs		p. 1
REGULAR CAB Long Bed 4WD	4WD	14,500 lbs	24,500 lbs		p. 1
DOUBLE CAB Standard Bed 2WD	2WD	14,500 lbs	26,000 lbs	18-inch or 20-inch wheels	p. 1
DOUBLE CAB Standard Bed 4WD	4WD	14,500 lbs	26,000 lbs	18-inch or 20-inch wheels	p. 1
REGULAR CAB Long Bed 2WD	2WD	14,500 lbs	26,000 lbs	18-inch or 20-inch wheels	p. 1
REGULAR CAB Long Bed 4WD	4WD	14,500 lbs	26,000 lbs	18-inch or 20-inch wheels	p. 1

Fifth-wheel or gooseneck

2026 GMC Sierra 2500HD 6.6L Duramax Turbo-Diesel V8 towing capacity, fifth-wheel or gooseneck hitch
Configuration	Drive	Max trailer	Needs	Source
Regular Cab 2WD 8' box 142 in. gooseneck/5th-wheelfootnote 3: 'Requires 6.6L Duramax Turbo-Diesel V8 engine.'; footnote 5: 'Requires Max Trailering Package and Gooseneck hitch.'	2WD	22,390 lbs	6.6L Duramax Turbo-Diesel V8 engine; Max Trailering Package; Gooseneck hitch	p. 132
Regular Cab 4WD 8' box 142 in. gooseneck/5th-wheelfootnote 3: 'Requires 6.6L Duramax Turbo-Diesel V8 engine.'; footnote 5: 'Requires Max Trailering Package and Gooseneck hitch.'	4WD	22,000 lbs	6.6L Duramax Turbo-Diesel V8 engine; Max Trailering Package; Gooseneck hitch	p. 132
Crew Cab 2WD 8' box 172 in. gooseneck/5th-wheelfootnote 3: 'Requires 6.6L Duramax Turbo-Diesel V8 engine.'; footnote 5: 'Requires Max Trailering Package and Gooseneck hitch.'	2WD	21,870 lbs	6.6L Duramax Turbo-Diesel V8 engine; Max Trailering Package; Gooseneck hitch	p. 132
Crew Cab 4WD 6' 9" box 159 in. gooseneck/5th-wheelfootnote 3: 'Requires 6.6L Duramax Turbo-Diesel V8 engine.'; footnote 5: 'Requires Max Trailering Package and Gooseneck hitch.'	4WD	21,600 lbs	6.6L Duramax Turbo-Diesel V8 engine; Max Trailering Package; Gooseneck hitch	p. 132
Crew Cab 2WD 6' 9" box 159 in. gooseneck/5th-wheelfootnote 3: 'Requires 6.6L Duramax Turbo-Diesel V8 engine.'; footnote 5: 'Requires Max Trailering Package and Gooseneck hitch.'	2WD	21,510 lbs	6.6L Duramax Turbo-Diesel V8 engine; Max Trailering Package; Gooseneck hitch	p. 132
Crew Cab 4WD 8' box 172 in. gooseneck/5th-wheelfootnote 3: 'Requires 6.6L Duramax Turbo-Diesel V8 engine.'; footnote 5: 'Requires Max Trailering Package and Gooseneck hitch.'	4WD	21,500 lbs	6.6L Duramax Turbo-Diesel V8 engine; Max Trailering Package; Gooseneck hitch	p. 132
Double Cab 2WD 6' 9" box 149 in. gooseneck/5th-wheelfootnote 3: 'Requires 6.6L Duramax Turbo-Diesel V8 engine.'	2WD	18,600 lbs	6.6L Duramax Turbo-Diesel V8 engine	p. 132
Double Cab 2WD 8' box 162 in. gooseneck/5th-wheelfootnote 3: 'Requires 6.6L Duramax Turbo-Diesel V8 engine.'	2WD	18,400 lbs	6.6L Duramax Turbo-Diesel V8 engine	p. 132
Double Cab 4WD 6' 9" box 149 in. gooseneck/5th-wheelfootnote 3: 'Requires 6.6L Duramax Turbo-Diesel V8 engine.'	4WD	18,200 lbs	6.6L Duramax Turbo-Diesel V8 engine	p. 132
Double Cab 4WD 8' box 162 in. gooseneck/5th-wheelfootnote 3: 'Requires 6.6L Duramax Turbo-Diesel V8 engine.'	4WD	18,000 lbs	6.6L Duramax Turbo-Diesel V8 engine	p. 132

2026 GMC Sierra 2500HD Duramax 6.6L Turbo-Diesel V8 towing capacity, fifth-wheel or gooseneck hitch
Configuration	Drive	Max trailer	GCWR	Needs	Source
REGULAR CAB Long Bed 2WD	2WD	22,390 lbs	30,000 lbs	Max Trailering Package	p. 2
REGULAR CAB Long Bed 4WD	4WD	22,000 lbs	30,000 lbs	Max Trailering Package	p. 2
CREW CAB Long Bed 2WD	2WD	21,870 lbs	30,300 lbs	Max Trailering Package	p. 2
CREW CAB Standard Bed 4WD	4WD	21,600 lbs	30,000 lbs	Max Trailering Package	p. 2
CREW CAB Standard Bed 2WD	2WD	21,510 lbs	30,000 lbs	Max Trailering Package	p. 2
CREW CAB Long Bed 4WD	4WD	21,500 lbs	30,000 lbs	Max Trailering Package	p. 2
AT4, CREW CAB Long Bed 4WDfootnote 9: AT4 maximum trailer rating	4WD	21,190 lbs	30,000 lbs	Max Trailering Package	p. 2
AT4, CREW CAB Standard Bed 4WDfootnote 9: AT4 maximum trailer rating	4WD	20,800 lbs	30,000 lbs	Max Trailering Package	p. 2
Denali, CREW CAB Standard Bed 4WDfootnote 7: Denali maximum trailer rating	4WD	19,900 lbs	30,000 lbs	Max Trailering Package	p. 2
Denali, CREW CAB Long Bed 4WDfootnote 7: Denali maximum trailer rating	4WD	19,820 lbs	30,000 lbs	Max Trailering Package	p. 2
Denali Ultimate, CREW CAB Standard Bed 4WDfootnote 10: Denali Ultimate maximum trailer rating	4WD	19,300 lbs	30,000 lbs	Max Trailering Package	p. 2
CREW CAB Standard Bed 2WD	2WD	19,200 lbs	27,500 lbs	18-inch or 20-inch wheels	p. 2
CREW CAB Long Bed 2WD	2WD	19,200 lbs	27,500 lbs	18-inch or 20-inch wheels	p. 2
Denali Ultimate, CREW CAB Long Bed 4WDfootnote 10: Denali Ultimate maximum trailer rating	4WD	19,190 lbs	30,000 lbs	Max Trailering Package	p. 2
CREW CAB Standard Bed 4WD	4WD	19,100 lbs	27,500 lbs	18-inch or 20-inch wheels	p. 2
CREW CAB Long Bed 4WD	4WD	19,000 lbs	27,500 lbs	18-inch or 20-inch wheels	p. 2
REGULAR CAB Long Bed 2WD	2WD	18,500 lbs	26,000 lbs		p. 2
Denali, CREW CAB Long Bed 4WDfootnote 7: Denali maximum trailer rating	4WD	18,400 lbs	27,500 lbs	18-inch or 20-inch wheels	p. 2
DOUBLE CAB Standard Bed 2WD	2WD	18,200 lbs	26,000 lbs		p. 2
REGULAR CAB Long Bed 4WD	4WD	18,200 lbs	26,000 lbs		p. 2
CREW CAB Standard Bed 2WD	2WD	18,000 lbs	26,000 lbs		p. 2
DOUBLE CAB Long Bed 2WD	2WD	18,000 lbs	26,000 lbs		p. 2
AT4, CREW CAB Long Bed 4WDfootnote 9: AT4 maximum trailer rating	4WD	18,000 lbs	27,500 lbs	18-inch or 20-inch wheels	p. 2
CREW CAB Long Bed 2WD	2WD	17,900 lbs	26,000 lbs		p. 2
DOUBLE CAB Standard Bed 4WD	4WD	17,900 lbs	26,000 lbs		p. 2
Denali Ultimate, CREW CAB Long Bed 4WDfootnote 10: Denali Ultimate maximum trailer rating	4WD	17,900 lbs	27,500 lbs	18-inch or 20-inch wheels	p. 2
CREW CAB Standard Bed 4WD	4WD	17,700 lbs	26,000 lbs		p. 2
DOUBLE CAB Long Bed 4WD	4WD	17,700 lbs	26,000 lbs		p. 2
CREW CAB Long Bed 4WD	4WD	17,600 lbs	26,000 lbs		p. 2
Denali, CREW CAB Standard Bed 4WDfootnote 7: Denali maximum trailer rating	4WD	17,600 lbs	27,500 lbs	18-inch or 20-inch wheels	p. 2
AT4 and AT4X, CREW CAB Standard Bed 4WDfootnote 8: AT4 and AT4X maximum trailer rating	4WD	17,300 lbs	27,500 lbs	18-inch or 20-inch wheels	p. 2
Denali Ultimate, CREW CAB Standard Bed 4WDfootnote 10: Denali Ultimate maximum trailer rating	4WD	17,200 lbs	27,500 lbs	18-inch or 20-inch wheels	p. 2
AT4X AEV Edition, CREW CAB Standard Bed 4WDfootnote 4: AT4X AEV Edition maximum trailer rating	4WD	14,800 lbs	27,500 lbs	18-inch or 20-inch wheels	p. 2

2026 GMC Sierra 2500HD 6.6L V8 Gas towing capacity, fifth-wheel or gooseneck hitch
Configuration	Drive	Max trailer	GCWR	Needs	Source
REGULAR CAB Long Bed 2WD	2WD	18,700 lbs	26,000 lbs	18-inch or 20-inch wheels	p. 2
DOUBLE CAB Standard Bed 2WD	2WD	18,600 lbs	26,000 lbs	18-inch or 20-inch wheels	p. 2
CREW CAB Standard Bed 2WD	2WD	18,500 lbs	26,000 lbs	18-inch or 20-inch wheels	p. 2
CREW CAB Long Bed 2WD	2WD	18,500 lbs	26,000 lbs	18-inch or 20-inch wheels	p. 2
DOUBLE CAB Long Bed 2WD	2WD	18,400 lbs	26,000 lbs	18-inch or 20-inch wheels	p. 2
CREW CAB Standard Bed 4WD	4WD	18,380 lbs	26,000 lbs	18-inch or 20-inch wheels	p. 2
REGULAR CAB Long Bed 4WD	4WD	18,300 lbs	26,000 lbs	18-inch or 20-inch wheels	p. 2
CREW CAB Long Bed 4WD	4WD	18,280 lbs	26,000 lbs	18-inch or 20-inch wheels	p. 2
DOUBLE CAB Standard Bed 4WD	4WD	18,200 lbs	26,000 lbs	18-inch or 20-inch wheels	p. 2
DOUBLE CAB Long Bed 4WD	4WD	18,000 lbs	26,000 lbs	18-inch or 20-inch wheels	p. 2
AT4, AT4X and Denali, CREW CAB Standard Bed 4WDfootnote 6: AT4, AT4X and Denali maximum trailer rating	4WD	18,000 lbs	26,000 lbs	18-inch or 20-inch wheels	p. 2
AT4 and Denali, CREW CAB Long Bed 4WDfootnote 5: AT4 and Denali maximum trailer rating	4WD	17,900 lbs	26,000 lbs	18-inch or 20-inch wheels	p. 2
REGULAR CAB Long Bed 2WD	2WD	17,700 lbs	24,500 lbs		p. 2
DOUBLE CAB Standard Bed 2WD	2WD	17,390 lbs	24,500 lbs		p. 2
REGULAR CAB Long Bed 4WD	4WD	17,370 lbs	24,500 lbs		p. 2
CREW CAB Standard Bed 2WD	2WD	17,270 lbs	24,500 lbs		p. 2
DOUBLE CAB Long Bed 2WD	2WD	17,260 lbs	24,500 lbs		p. 2
CREW CAB Long Bed 2WD	2WD	17,180 lbs	24,500 lbs		p. 2
DOUBLE CAB Standard Bed 4WD	4WD	17,050 lbs	24,500 lbs		p. 2
CREW CAB Standard Bed 4WD	4WD	16,960 lbs	24,500 lbs		p. 2
DOUBLE CAB Long Bed 4WD	4WD	16,960 lbs	24,500 lbs		p. 2
CREW CAB Long Bed 4WD	4WD	16,870 lbs	24,500 lbs		p. 2
AT4X AEV Edition, CREW CAB Standard Bed 4WDfootnote 4: AT4X AEV Edition maximum trailer rating	4WD	16,200 lbs	26,000 lbs	18-inch or 20-inch wheels	p. 2

Common questions

Which 2026 GMC Sierra 2500HD engine tows the most?

6.6L Duramax Turbo-Diesel V8, at up to 20,000 lbs. Next is Duramax 6.6L Turbo-Diesel V8 at up to 20,000 lbs.

What does a 2026 GMC Sierra 2500HD need to tow 20,000 lbs?

The source lists this for the top-rated configuration: 6.6L Duramax Turbo-Diesel V8 engine; Max Trailering Package.

Can a 2026 GMC Sierra 2500HD tow a fifth-wheel or gooseneck trailer?

The manufacturer publishes fifth-wheel or gooseneck ratings for it, up to 22,390 lbs. They are listed by configuration above.

Where do these numbers come from?

From 2026 GM Envolve Fleet Guide; 2026 SIERRA 2500 HD MAX CONVENTIONAL TRAILERING. Each row in the tables above links to the document and gives the page the figure is printed on.

Towing equipment for the 2026 GMC Sierra 2500HD

The manufacturer's tables name this equipment for some 2026 GMC Sierra 2500HD configurations. Equipment does not raise a rating. Check the Needs column for your own build before buying anything.

Gooseneck hitch, listed for 6 of 117 configurations. See on Amazon (paid link)

Parts sold to fit this vehicle. Fitting one does not raise a rating, and the tables above say what each rating needs.

Trailer wiring harness for the 2026 GMC Sierra 2500HD. See on Amazon (paid link)
Trailer hitch receiver for the 2026 GMC Sierra 2500HD. See on Amazon (paid link)

As an Amazon Associate we earn from qualifying purchases. The ratings on this page come only from the documents cited.

Where these numbers come from

2026 GM Envolve Fleet Guide, GM Fleet. Manufacturer spec sheet. Retrieved October 3, 2026.
2026 SIERRA 2500 HD MAX CONVENTIONAL TRAILERING, GMC. Manufacturer towing guide. Retrieved October 3, 2026.

Page numbers count pages in the linked file, which can differ from the number printed in the corner. Report a number that looks wrong.

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