GMC / Model year 2026US market

2026 GMC
Sierra 3500 HD.

Published conventional towing limits, with their configuration conditions. Match every identifying detail before using a rating.

The configuration index29 confirmed source cells

Configuration	Body / wheelbase	Drive / axle	GCWR (lb)	Trailer rating (lb)
6.6L V8 gas See equipment conditions	Crew Cab Long Bed	2WD DRW Axle ratio unknown	26,000 11,793 kg	18,200 8,255 kg
6.6L V8 gas See equipment conditions	Crew Cab Long Bed	2WD SRW Axle ratio unknown	26,000 11,793 kg	16,000 7,257 kg
6.6L V8 gas See equipment conditions	Crew Cab Long Bed	4WD DRW Axle ratio unknown	26,000 11,793 kg	17,800 8,074 kg
6.6L V8 gas See equipment conditions	Crew Cab Long Bed	4WD SRW Axle ratio unknown	26,000 11,793 kg	16,000 7,257 kg
6.6L V8 gas See equipment conditions	Crew Cab Standard Bed	2WD SRW Axle ratio unknown	26,000 11,793 kg	16,000 7,257 kg
6.6L V8 gas See equipment conditions	Crew Cab Standard Bed	4WD SRW Axle ratio unknown	26,000 11,793 kg	16,000 7,257 kg
6.6L V8 gas See equipment conditions	Double Cab Long Bed	2WD DRW Axle ratio unknown	26,000 11,793 kg	18,300 8,301 kg
6.6L V8 gas See equipment conditions	Double Cab Long Bed	2WD SRW Axle ratio unknown	26,000 11,793 kg	16,000 7,257 kg
6.6L V8 gas See equipment conditions	Double Cab Long Bed	4WD DRW Axle ratio unknown	26,000 11,793 kg	18,000 8,165 kg
6.6L V8 gas See equipment conditions	Double Cab Long Bed	4WD SRW Axle ratio unknown	26,000 11,793 kg	16,000 7,257 kg
6.6L V8 gas See equipment conditions	Regular Cab Long Bed	2WD DRW Axle ratio unknown	26,000 11,793 kg	18,700 8,482 kg
6.6L V8 gas See equipment conditions	Regular Cab Long Bed	2WD SRW Axle ratio unknown	26,000 11,793 kg	14,500 6,577 kg
6.6L V8 gas See equipment conditions	Regular Cab Long Bed	4WD DRW Axle ratio unknown	26,000 11,793 kg	18,400 8,346 kg
6.6L V8 gas See equipment conditions	Regular Cab Long Bed	4WD SRW Axle ratio unknown	26,000 11,793 kg	14,500 6,577 kg
Duramax 6.6L V8 Turbo-Diesel See equipment conditions	Crew Cab Long Bed	2WD DRW Axle ratio unknown	40,000 18,144 kg	20,000 9,072 kg
Duramax 6.6L V8 Turbo-Diesel See equipment conditions	Crew Cab Long Bed	2WD SRW Axle ratio unknown	30,300 13,744 kg	20,000 9,072 kg
Duramax 6.6L V8 Turbo-Diesel See equipment conditions	Crew Cab Long Bed	4WD DRW Axle ratio unknown	40,000 18,144 kg	20,000 9,072 kg
Duramax 6.6L V8 Turbo-Diesel See equipment conditions	Crew Cab Long Bed	4WD SRW Axle ratio unknown	30,000 13,608 kg	20,000 9,072 kg
Duramax 6.6L V8 Turbo-Diesel See equipment conditions	Crew Cab Standard Bed	2WD SRW Axle ratio unknown	30,000 13,608 kg	20,000 9,072 kg
Duramax 6.6L V8 Turbo-Diesel See equipment conditions	Crew Cab Standard Bed	4WD SRW Axle ratio unknown	30,000 13,608 kg	20,000 9,072 kg
Duramax 6.6L V8 Turbo-Diesel See equipment conditions	Double Cab Long Bed	2WD DRW Axle ratio unknown	40,000 18,144 kg	20,000 9,072 kg
Duramax 6.6L V8 Turbo-Diesel See equipment conditions	Double Cab Long Bed	2WD SRW Axle ratio unknown	30,000 13,608 kg	20,000 9,072 kg
Duramax 6.6L V8 Turbo-Diesel See equipment conditions	Double Cab Long Bed	4WD DRW Axle ratio unknown	40,000 18,144 kg	20,000 9,072 kg
Duramax 6.6L V8 Turbo-Diesel See equipment conditions	Double Cab Long Bed	4WD SRW Axle ratio unknown	30,000 13,608 kg	20,000 9,072 kg
Duramax 6.6L V8 Turbo-Diesel See equipment conditions	Regular Cab Long Bed	2WD DRW Axle ratio unknown	43,500 19,731 kg	20,000 9,072 kg
Duramax 6.6L V8 Turbo-Diesel Max Trailering Package	Regular Cab Long Bed	2WD DRW Axle ratio unknown	43,900 19,913 kg	20,000 9,072 kg
Duramax 6.6L V8 Turbo-Diesel See equipment conditions	Regular Cab Long Bed	2WD SRW Axle ratio unknown	30,000 13,608 kg	14,500 6,577 kg
Duramax 6.6L V8 Turbo-Diesel See equipment conditions	Regular Cab Long Bed	4WD DRW Axle ratio unknown	40,000 18,144 kg	20,000 9,072 kg
Duramax 6.6L V8 Turbo-Diesel See equipment conditions	Regular Cab Long Bed	4WD SRW Axle ratio unknown	30,000 13,608 kg	14,500 6,577 kg

These are published configuration ratings, not a measurement of your truck. Additional equipment and loading can reduce available trailer capacity. Read each configuration’s conditions. Payload, GVWR, and axle ratings that are not verified for an individual vehicle remain unknown.

What this table covers

Each row corresponds to a specific reviewed manufacturer table cell. Empty cells are not filled by interpolation. Package names and exclusions are retained on the configuration page. We do not generate all possible engine, cab, and axle combinations.

Before your calculation

Find your vehicle’s Tire and Loading Information label, certification label, receiver label, and the trailer and coupling component ratings. Weigh the loaded combination to evaluate actual axle loads.