2026 GMC Sierra 2500 HD Towing Capacity

The 2026 GMC Sierra 2500 HD tows between 14,500 and 20,000 lbs depending on engine, drivetrain, cab, axle ratio, and tow package. The highest rating — 20,000 lbs — requires the Duramax 6.6L Turbo-Diesel V8, 4x2 with the Max Trailering Package package. 41 configurations verified from the manufacturer's towing guide.

Source: 2026 GMC Sierra 2500 HD Max Trailering chart (official) · Updated 2026-06-12 · Reviewed by the CarWhere Vehicle Data Team

Every configuration, every rating

2026 GMC Sierra 2500 HD towing capacity by engine, drivetrain, cab, axle ratio, and tow package
EngineDriveCab / bedAxlePackageMax towingGCWR
Duramax 6.6L Turbo-Diesel V84x2Regular / Long Bed—Max Trailering Package14,50030,000
6.6L V8 Gas4x2Crew / Standard Bed——14,50024,500
6.6L V8 Gas4x2Double / Standard Bed——14,50024,500
6.6L V8 Gas4x2Double / Long Bed——14,50024,500
6.6L V8 Gas4x2Regular / Long Bed——14,50024,500
6.6L V8 Gas4x4Double / Standard Bed—18-inch or 20-inch wheels14,50026,000
6.6L V8 Gas4x4Regular / Long Bed—18-inch or 20-inch wheels14,50026,000
Duramax 6.6L Turbo-Diesel V84x4Regular / Long Bed—Max Trailering Package14,50030,000
6.6L V8 Gas4x2Crew / Long Bed——14,50024,500
Duramax 6.6L Turbo-Diesel V84x2Double / Standard Bed——14,50026,000
Duramax 6.6L Turbo-Diesel V84x4Regular / Long Bed——14,50026,000
Duramax 6.6L Turbo-Diesel V84x2Regular / Long Bed——14,50026,000
Duramax 6.6L Turbo-Diesel V84x4Double / Standard Bed——14,50026,000
6.6L V8 Gas4x2Double / Standard Bed—18-inch or 20-inch wheels14,50026,000
6.6L V8 Gas4x2Regular / Long Bed—18-inch or 20-inch wheels14,50026,000
6.6L V8 Gas4x4Crew / Standard Bed——14,50024,500
6.6L V8 Gas4x4Crew / Long Bed——14,50024,500
6.6L V8 Gas4x4Double / Standard Bed——14,50024,500
6.6L V8 Gas4x4Double / Long Bed——14,50024,500
6.6L V8 Gas4x4Regular / Long Bed——14,50024,500
6.6L V8 Gas4x4Crew / Long Bed—18-inch or 20-inch wheels16,00026,000
6.6L V8 Gas4x2Crew / Long Bed—18-inch or 20-inch wheels16,00026,000
6.6L V8 Gas4x4Double / Long Bed—18-inch or 20-inch wheels16,00026,000
6.6L V8 Gas4x2Double / Long Bed—18-inch or 20-inch wheels16,00026,000
6.6L V8 Gas4x2Crew / Standard Bed—18-inch or 20-inch wheels16,00026,000
6.6L V8 Gas4x4Crew / Standard Bed—18-inch or 20-inch wheels16,00026,000
Duramax 6.6L Turbo-Diesel V84x4Double / Long Bed——17,60026,000
Duramax 6.6L Turbo-Diesel V84x4Crew / Long Bed——17,70026,000
Duramax 6.6L Turbo-Diesel V84x4Crew / Standard Bed——17,80026,000
Duramax 6.6L Turbo-Diesel V84x2Crew / Long Bed——17,80026,000
Duramax 6.6L Turbo-Diesel V84x2Double / Long Bed——17,90026,000
Duramax 6.6L Turbo-Diesel V84x2Crew / Standard Bed——18,00026,000
Duramax 6.6L Turbo-Diesel V84x4Crew / Standard Bed—18-inch or 20-inch wheels; AT4X AEV Edition18,40027,500
Duramax 6.6L Turbo-Diesel V84x4Crew / Long Bed—18-inch or 20-inch wheels18,50027,500
Duramax 6.6L Turbo-Diesel V84x4Crew / Standard Bed—18-inch or 20-inch wheels18,50027,500
Duramax 6.6L Turbo-Diesel V84x2Crew / Long Bed—18-inch or 20-inch wheels18,50027,500
Duramax 6.6L Turbo-Diesel V84x2Crew / Standard Bed—18-inch or 20-inch wheels18,50027,500
Duramax 6.6L Turbo-Diesel V84x2Crew / Long Bed—Max Trailering Package20,00030,300
Duramax 6.6L Turbo-Diesel V84x4Crew / Standard Bed—Max Trailering Package20,00030,000
Duramax 6.6L Turbo-Diesel V84x4Crew / Long Bed—Max Trailering Package20,00030,000
Duramax 6.6L Turbo-Diesel V84x2Crew / Standard Bed—Max Trailering Package20,00030,000

Find YOUR exact rating + run the trailer math

This configuration tows —–— lbs depending on axle ratio and tow package.

The VIN doesn't encode the axle ratio. Pick yours below (it's on the door-jamb certification label or glovebox sticker) — or pull your window sticker free, which lists the axle ratio and tow package.

Axle ratioTow packageMax towingGCWR
—Max Trailering Package14,500 lbs30,000
—standard14,500 lbs24,500
—standard14,500 lbs24,500
—standard14,500 lbs24,500
—standard14,500 lbs24,500
—18-inch or 20-inch wheels14,500 lbs26,000
—18-inch or 20-inch wheels14,500 lbs26,000
—Max Trailering Package14,500 lbs30,000
—standard14,500 lbs24,500
—standard14,500 lbs26,000
—standard14,500 lbs26,000
—standard14,500 lbs26,000
—standard14,500 lbs26,000
—18-inch or 20-inch wheels14,500 lbs26,000
—18-inch or 20-inch wheels14,500 lbs26,000
—standard14,500 lbs24,500
—standard14,500 lbs24,500
—standard14,500 lbs24,500
—standard14,500 lbs24,500
—standard14,500 lbs24,500
—18-inch or 20-inch wheels16,000 lbs26,000
—18-inch or 20-inch wheels16,000 lbs26,000
—18-inch or 20-inch wheels16,000 lbs26,000
—18-inch or 20-inch wheels16,000 lbs26,000
—18-inch or 20-inch wheels16,000 lbs26,000
—18-inch or 20-inch wheels16,000 lbs26,000
—standard17,600 lbs26,000
—standard17,700 lbs26,000
—standard17,800 lbs26,000
—standard17,800 lbs26,000
—standard17,900 lbs26,000
—standard18,000 lbs26,000
—18-inch or 20-inch wheels; AT4X AEV Edition18,400 lbs27,500
—18-inch or 20-inch wheels18,500 lbs27,500
—18-inch or 20-inch wheels18,500 lbs27,500
—18-inch or 20-inch wheels18,500 lbs27,500
—18-inch or 20-inch wheels18,500 lbs27,500
—Max Trailering Package20,000 lbs30,300
—Max Trailering Package20,000 lbs30,000
—Max Trailering Package20,000 lbs30,000
—Max Trailering Package20,000 lbs30,000

Ratings from manufacturer towing guides; always verify against the certification placard on your door jamb. Informational — not professional advice.

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FAQ

What is the maximum towing capacity of the 2026 GMC Sierra 2500 HD?

20,000 lbs — but only in one specific configuration: the Duramax 6.6L Turbo-Diesel V8, 4x2, Crew, with the Max Trailering Package package. Other configurations rate as low as 14,500 lbs. Source: 2026 GMC Sierra 2500 HD Max Trailering chart (official).

Can a 2026 GMC Sierra 2500 HD tow a 25-foot travel trailer?

A typical 25-ft travel trailer weighs 6,000–7,500 lbs loaded. Higher-rated Sierra 2500 HD configurations (up to 20,000 lbs) handle that with margin, but payload is usually the real constraint: ~750+ lbs of tongue weight plus passengers counts against payload, not the tow rating. Use the calculator above with your exact configuration and passenger count.

How do I find MY Sierra 2500 HD's exact towing capacity?

Enter the VIN above — it resolves engine, drivetrain, and cab. If your configuration's rating still depends on axle ratio or tow package (the VIN doesn't encode those), check the door-jamb certification label, or pull your window sticker free on CarWhere — it lists both.