2026 GMC Sierra 2500 HD Towing Capacity

Compare the ratings published for this model year, then match engine, cab, bed, drivetrain, axle ratio, and listed equipment to the truck.

View full comparison chart Review every configuration and published tow type → Browse Sierra 2500 HD years Return to the available model years →

31 configuration groups · 97 published rating outcomes

Published Max
22,390 LBS
Rating Groups
31
Equipment Checks
27
ENGINE GROUPS

Published Ratings by Engine

Your engine determines your base towing limit. Start here to see the 2026 ratings for your specific Sierra 2500 HD configuration.

Equipment-dependent ratings remain labeled until the listed truck details are confirmed.

Duramax 6.6L Turbo-Diesel V8 18 configuration groups
Range: 14,500–22,390 lbs
Published max 22,390 LBS
6.6L V8 Gas 13 configuration groups
Range: 14,500–18,700 lbs
Published max 18,700 LBS
2026 Sierra 2500 HD towing chart
Engine group

Duramax 6.6L Turbo-Diesel V8

14,500–22,390 lbs

Towing Capacity Chart

Duramax 6.6L Turbo-Diesel V8 configurations

18 groups 4 exact 14 equipment-conditioned 14,500 to 22,390 lbs published
Crew Cab / Long Bed / 2WD Duramax 6.6L Turbo-Diesel V8 Not listed
Conventional: 17,800 lbsConventional: 18,500 lbsConventional: 20,000 lbsFifth-wheel / gooseneck (combined by GMC): 17,900 lbsFifth-wheel / gooseneck (combined by GMC): 19,200 lbsFifth-wheel / gooseneck (combined by GMC): 21,870 lbs
26,000 lbs27,500 lbs30,300 lbs26,000 lbs27,500 lbs30,300 lbs
Requires available 18" or 20" wheels. Requires available Max Trailering Package. p.1 / p.2 Equipment check
Crew Cab / Long Bed / 4WD Duramax 6.6L Turbo-Diesel V8 Not listed
Fifth-wheel / gooseneck (combined by GMC): 18,000 lbsFifth-wheel / gooseneck (combined by GMC): 21,190 lbs
27,500 lbs30,000 lbs
AT4 maximum trailer rating. Requires available 18" or 20" wheels. Requires available Max Trailering Package. p.2 Equipment check
Crew Cab / Long Bed / 4WD Duramax 6.6L Turbo-Diesel V8 Not listed
Fifth-wheel / gooseneck (combined by GMC): 18,400 lbsFifth-wheel / gooseneck (combined by GMC): 19,820 lbs
27,500 lbs30,000 lbs
Denali maximum trailer rating. Requires available 18" or 20" wheels. Requires available Max Trailering Package. p.2 Equipment check
Crew Cab / Long Bed / 4WD Duramax 6.6L Turbo-Diesel V8 Not listed
Fifth-wheel / gooseneck (combined by GMC): 17,900 lbsFifth-wheel / gooseneck (combined by GMC): 19,190 lbs
27,500 lbs30,000 lbs
Denali Ultimate maximum trailer rating. Requires available 18" or 20" wheels. Requires available Max Trailering Package. p.2 Equipment check
Crew Cab / Long Bed / 4WD Duramax 6.6L Turbo-Diesel V8 Not listed
Conventional: 17,700 lbsConventional: 18,500 lbsConventional: 20,000 lbsFifth-wheel / gooseneck (combined by GMC): 17,600 lbsFifth-wheel / gooseneck (combined by GMC): 19,000 lbsFifth-wheel / gooseneck (combined by GMC): 21,500 lbs
26,000 lbs27,500 lbs30,000 lbs26,000 lbs27,500 lbs30,000 lbs
Requires available 18" or 20" wheels. Requires available Max Trailering Package. p.1 / p.2 Equipment check
Double Cab / Long Bed / 2WD Duramax 6.6L Turbo-Diesel V8 Not listed
Conventional: 17,900 lbsFifth-wheel / gooseneck (combined by GMC): 18,000 lbs
26,000 lbs26,000 lbs
No additional row condition listed p.1 / p.2 Exact
Double Cab / Long Bed / 4WD Duramax 6.6L Turbo-Diesel V8 Not listed
Conventional: 17,600 lbsFifth-wheel / gooseneck (combined by GMC): 17,700 lbs
26,000 lbs26,000 lbs
No additional row condition listed p.1 / p.2 Exact
Regular Cab / Long Bed / 2WD Duramax 6.6L Turbo-Diesel V8 Not listed
Conventional: 14,500 lbsConventional: 14,500 lbsFifth-wheel / gooseneck (combined by GMC): 18,500 lbsFifth-wheel / gooseneck (combined by GMC): 22,390 lbs
26,000 lbs30,000 lbs26,000 lbs30,000 lbs
Requires available Max Trailering Package. p.1 / p.2 Equipment check
Regular Cab / Long Bed / 4WD Duramax 6.6L Turbo-Diesel V8 Not listed
Conventional: 14,500 lbsConventional: 14,500 lbsFifth-wheel / gooseneck (combined by GMC): 18,200 lbsFifth-wheel / gooseneck (combined by GMC): 22,000 lbs
26,000 lbs30,000 lbs26,000 lbs30,000 lbs
Requires available Max Trailering Package. p.1 / p.2 Equipment check
Crew Cab / Standard Bed / 2WD Duramax 6.6L Turbo-Diesel V8 Not listed
Conventional: 18,000 lbsConventional: 18,500 lbsConventional: 20,000 lbsFifth-wheel / gooseneck (combined by GMC): 18,000 lbsFifth-wheel / gooseneck (combined by GMC): 19,200 lbsFifth-wheel / gooseneck (combined by GMC): 21,510 lbs
26,000 lbs27,500 lbs30,000 lbs26,000 lbs27,500 lbs30,000 lbs
Requires available 18" or 20" wheels. Requires available Max Trailering Package. p.1 / p.2 Equipment check
Crew Cab / Standard Bed / 4WD Duramax 6.6L Turbo-Diesel V8 Not listed
Fifth-wheel / gooseneck (combined by GMC): 20,800 lbs
30,000 lbs
AT4 maximum trailer rating. Requires available Max Trailering Package. p.2 Equipment check
Crew Cab / Standard Bed / 4WD Duramax 6.6L Turbo-Diesel V8 Not listed
Fifth-wheel / gooseneck (combined by GMC): 17,300 lbs
27,500 lbs
AT4 and AT4X maximum trailer rating. Requires available 18" or 20" wheels. p.2 Equipment check
Crew Cab / Standard Bed / 4WD Duramax 6.6L Turbo-Diesel V8 Not listed
Conventional: 18,400 lbsFifth-wheel / gooseneck (combined by GMC): 14,800 lbs
27,500 lbs27,500 lbs
AT4X AEV Edition maximum trailer rating. Requires available 18" or 20" wheels. p.1 / p.2 Equipment check
Crew Cab / Standard Bed / 4WD Duramax 6.6L Turbo-Diesel V8 Not listed
Fifth-wheel / gooseneck (combined by GMC): 17,600 lbsFifth-wheel / gooseneck (combined by GMC): 19,900 lbs
27,500 lbs30,000 lbs
Denali maximum trailer rating. Requires available 18" or 20" wheels. Requires available Max Trailering Package. p.2 Equipment check
Crew Cab / Standard Bed / 4WD Duramax 6.6L Turbo-Diesel V8 Not listed
Fifth-wheel / gooseneck (combined by GMC): 17,200 lbsFifth-wheel / gooseneck (combined by GMC): 19,300 lbs
27,500 lbs30,000 lbs
Denali Ultimate maximum trailer rating. Requires available 18" or 20" wheels. Requires available Max Trailering Package. p.2 Equipment check
Crew Cab / Standard Bed / 4WD Duramax 6.6L Turbo-Diesel V8 Not listed
Conventional: 17,800 lbsConventional: 18,500 lbsConventional: 20,000 lbsFifth-wheel / gooseneck (combined by GMC): 17,700 lbsFifth-wheel / gooseneck (combined by GMC): 19,100 lbsFifth-wheel / gooseneck (combined by GMC): 21,600 lbs
26,000 lbs27,500 lbs30,000 lbs26,000 lbs27,500 lbs30,000 lbs
Requires available 18" or 20" wheels. Requires available Max Trailering Package. p.1 / p.2 Equipment check
Double Cab / Standard Bed / 2WD Duramax 6.6L Turbo-Diesel V8 Not listed
Conventional: 14,500 lbsFifth-wheel / gooseneck (combined by GMC): 18,200 lbs
26,000 lbs26,000 lbs
No additional row condition listed p.1 / p.2 Exact
Double Cab / Standard Bed / 4WD Duramax 6.6L Turbo-Diesel V8 Not listed
Conventional: 14,500 lbsFifth-wheel / gooseneck (combined by GMC): 17,900 lbs
26,000 lbs26,000 lbs
No additional row condition listed p.1 / p.2 Exact
Engine group

6.6L V8 Gas

14,500–18,700 lbs

Towing Capacity Chart

6.6L V8 Gas configurations

13 groups 0 exact 13 equipment-conditioned 14,500 to 18,700 lbs published
Crew Cab / Long Bed / 2WD 6.6L V8 Gas Not listed
Conventional: 14,500 lbsConventional: 16,000 lbsFifth-wheel / gooseneck (combined by GMC): 17,180 lbsFifth-wheel / gooseneck (combined by GMC): 18,500 lbs
24,500 lbs26,000 lbs24,500 lbs26,000 lbs
Requires available 18" or 20" wheels. p.1 / p.2 Equipment check
Crew Cab / Long Bed / 4WD 6.6L V8 Gas Not listed
Fifth-wheel / gooseneck (combined by GMC): 17,900 lbs
26,000 lbs
AT4 and Denali maximum trailer rating. Requires available 18" or 20" wheels. p.2 Equipment check
Crew Cab / Long Bed / 4WD 6.6L V8 Gas Not listed
Conventional: 14,500 lbsConventional: 16,000 lbsFifth-wheel / gooseneck (combined by GMC): 16,870 lbsFifth-wheel / gooseneck (combined by GMC): 18,280 lbs
24,500 lbs26,000 lbs24,500 lbs26,000 lbs
Requires available 18" or 20" wheels. p.1 / p.2 Equipment check
Double Cab / Long Bed / 2WD 6.6L V8 Gas Not listed
Conventional: 14,500 lbsConventional: 16,000 lbsFifth-wheel / gooseneck (combined by GMC): 17,260 lbsFifth-wheel / gooseneck (combined by GMC): 18,400 lbs
24,500 lbs26,000 lbs24,500 lbs26,000 lbs
Requires available 18" or 20" wheels. p.1 / p.2 Equipment check
Double Cab / Long Bed / 4WD 6.6L V8 Gas Not listed
Conventional: 14,500 lbsConventional: 16,000 lbsFifth-wheel / gooseneck (combined by GMC): 16,960 lbsFifth-wheel / gooseneck (combined by GMC): 18,000 lbs
24,500 lbs26,000 lbs24,500 lbs26,000 lbs
Requires available 18" or 20" wheels. p.1 / p.2 Equipment check
Regular Cab / Long Bed / 2WD 6.6L V8 Gas Not listed
Conventional: 14,500 lbsConventional: 14,500 lbsFifth-wheel / gooseneck (combined by GMC): 17,700 lbsFifth-wheel / gooseneck (combined by GMC): 18,700 lbs
24,500 lbs26,000 lbs24,500 lbs26,000 lbs
Requires available 18" or 20" wheels. p.1 / p.2 Equipment check
Regular Cab / Long Bed / 4WD 6.6L V8 Gas Not listed
Conventional: 14,500 lbsConventional: 14,500 lbsFifth-wheel / gooseneck (combined by GMC): 17,370 lbsFifth-wheel / gooseneck (combined by GMC): 18,300 lbs
24,500 lbs26,000 lbs24,500 lbs26,000 lbs
Requires available 18" or 20" wheels. p.1 / p.2 Equipment check
Crew Cab / Standard Bed / 2WD 6.6L V8 Gas Not listed
Conventional: 14,500 lbsConventional: 16,000 lbsFifth-wheel / gooseneck (combined by GMC): 17,270 lbsFifth-wheel / gooseneck (combined by GMC): 18,500 lbs
24,500 lbs26,000 lbs24,500 lbs26,000 lbs
Requires available 18" or 20" wheels. p.1 / p.2 Equipment check
Crew Cab / Standard Bed / 4WD 6.6L V8 Gas Not listed
Fifth-wheel / gooseneck (combined by GMC): 18,000 lbs
26,000 lbs
AT4, AT4X and Denali maximum trailer rating. Requires available 18" or 20" wheels. p.2 Equipment check
Crew Cab / Standard Bed / 4WD 6.6L V8 Gas Not listed
Fifth-wheel / gooseneck (combined by GMC): 16,200 lbs
26,000 lbs
AT4X AEV Edition maximum trailer rating. Requires available 18" or 20" wheels. p.2 Equipment check
Crew Cab / Standard Bed / 4WD 6.6L V8 Gas Not listed
Conventional: 14,500 lbsConventional: 16,000 lbsFifth-wheel / gooseneck (combined by GMC): 16,960 lbsFifth-wheel / gooseneck (combined by GMC): 18,380 lbs
24,500 lbs26,000 lbs24,500 lbs26,000 lbs
Requires available 18" or 20" wheels. p.1 / p.2 Equipment check
Double Cab / Standard Bed / 2WD 6.6L V8 Gas Not listed
Conventional: 14,500 lbsConventional: 14,500 lbsFifth-wheel / gooseneck (combined by GMC): 17,390 lbsFifth-wheel / gooseneck (combined by GMC): 18,600 lbs
24,500 lbs26,000 lbs24,500 lbs26,000 lbs
Requires available 18" or 20" wheels. p.1 / p.2 Equipment check
Double Cab / Standard Bed / 4WD 6.6L V8 Gas Not listed
Conventional: 14,500 lbsConventional: 14,500 lbsFifth-wheel / gooseneck (combined by GMC): 17,050 lbsFifth-wheel / gooseneck (combined by GMC): 18,200 lbs
24,500 lbs26,000 lbs24,500 lbs26,000 lbs
Requires available 18" or 20" wheels. p.1 / p.2 Equipment check
Ratings

Tow types stay separate

Conventional, fifth-wheel, and gooseneck values are shown as distinct outcomes when GMC publishes more than one for a configuration.

Truck check

Equipment conditions stay visible

A condition attached to a rating remains part of the answer. It is not treated as an optional note.

Guide

Use the matching owner manual

Vehicle-wide towing guidance is not inferred from another GMC model or model year. Confirm it in the manual for this truck.

Technical Audit

Data sources

These citations identify the GMC trailering-guide pages used for the 2026 Sierra 2500 HD chart ratings.

Show source pages for the 2026 guide
DOC_ID: 2026-GMC DOCUMENT BASIS

2026-GMC-Sierra-2500-Trailering-Chart

Audit Scope PAGES: 1-2