2021 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 →

46 configuration groups · 138 published rating outcomes

Published Max
18,510 LBS
Rating Groups
46
Equipment Checks
12
ENGINE GROUPS

Published Ratings by Engine

Your engine determines your base towing limit. Start here to see the 2021 ratings for your specific Sierra 2500 HD configuration.

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

6.6L Duramax Turbo Diesel V8 22 configuration groups
Range: 10,240–18,510 lbs
Published max 18,510 LBS
6.6L Gas V8 24 configuration groups
Range: 14,500–17,370 lbs
Published max 17,370 LBS
2021 Sierra 2500 HD towing chart
Engine group

6.6L Duramax Turbo Diesel V8

10,240–18,510 lbs

Towing Capacity Chart

6.6L Duramax Turbo Diesel V8 configurations

22 groups 16 exact 6 equipment-conditioned 10,240 to 18,510 lbs published
Crew / Long / 2WD 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 12,550 lbsGooseneck: 12,550 lbs
26,000 lbs26,000 lbs26,000 lbs
No additional row condition listed p.8 Exact
Crew / Long / 2WD 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 17,970 lbsFifth-wheel: 12,350 lbsGooseneck: 12,350 lbs
26,000 lbs26,000 lbs26,000 lbs
No additional row condition listed p.8 Exact
Crew / Long / 2WD 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 18,500 lbsFifth-wheel: 18,500 lbsGooseneck: 18,500 lbs
27,500 lbs27,500 lbs27,500 lbs
No additional row condition listed p.6 Exact
Crew / Long / 4WD 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 10,620 lbsGooseneck: 10,620 lbs
26,000 lbs26,000 lbs26,000 lbs
No additional row condition listed p.8 Exact
Crew / Long / 4WD 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 16,560 lbsFifth-wheel: 10,240 lbsGooseneck: 10,240 lbs
26,000 lbs26,000 lbs26,000 lbs
No additional row condition listed p.8 Exact
Crew / Long / 4WD / AT4 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 18,500 lbsFifth-wheel: 18,500 lbsGooseneck: 18,500 lbs
27,500 lbs27,500 lbs27,500 lbs
No additional row condition listed p.6 Equipment check
Crew / Long / 4WD / Denali 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 18,500 lbsFifth-wheel: 18,500 lbsGooseneck: 18,500 lbs
27,500 lbs27,500 lbs27,500 lbs
No additional row condition listed p.6 Equipment check
Crew / Long / 4WD 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 18,500 lbsFifth-wheel: 18,500 lbsGooseneck: 18,500 lbs
27,500 lbs27,500 lbs27,500 lbs
No additional row condition listed p.6 Equipment check
Double / Long / 2WD 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 18,040 lbsGooseneck: 18,040 lbs
26,000 lbs26,000 lbs26,000 lbs
No additional row condition listed p.6 Exact
Double / Long / 4WD 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 11,690 lbsGooseneck: 11,690 lbs
24,500 lbs24,500 lbs24,500 lbs
No additional row condition listed p.8 Exact
Double / Long / 4WD 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 17,750 lbsGooseneck: 17,750 lbs
26,000 lbs26,000 lbs26,000 lbs
No additional row condition listed p.6 Exact
Regular / Long / 2WD 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 18,510 lbsGooseneck: 18,510 lbs
26,000 lbs26,000 lbs26,000 lbs
No additional row condition listed p.6 Exact
Regular / Long / 4WD 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 18,190 lbsGooseneck: 18,190 lbs
26,000 lbs26,000 lbs26,000 lbs
No additional row condition listed p.6 Exact
Crew / Standard / 2WD 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 18,500 lbsFifth-wheel: 18,500 lbsGooseneck: 18,500 lbs
27,500 lbs27,500 lbs27,500 lbs
No additional row condition listed p.6 Exact
Crew / Standard / 4WD 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 11,720 lbsGooseneck: 11,720 lbs
26,000 lbs26,000 lbs26,000 lbs
No additional row condition listed p.8 Exact
Crew / Standard / 4WD 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 17,850 lbsFifth-wheel: 11,530 lbsGooseneck: 11,530 lbs
26,000 lbs26,000 lbs26,000 lbs
No additional row condition listed p.8 Exact
Crew / Standard / 4WD / AT4 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 18,500 lbsFifth-wheel: 18,500 lbsGooseneck: 18,500 lbs
27,500 lbs27,500 lbs27,500 lbs
No additional row condition listed p.6 Equipment check
Crew / Standard / 4WD / Denali 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 18,500 lbsFifth-wheel: 17,860 lbsGooseneck: 17,860 lbs
27,500 lbs27,500 lbs27,500 lbs
No additional row condition listed p.6 Equipment check
Crew / Standard / 4WD 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 18,500 lbsFifth-wheel: 18,500 lbsGooseneck: 18,500 lbs
27,500 lbs27,500 lbs27,500 lbs
No additional row condition listed p.6 Equipment check
Double / Standard / 2WD 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 18,200 lbsGooseneck: 18,200 lbs
26,000 lbs26,000 lbs26,000 lbs
No additional row condition listed p.6 Exact
Double / Standard / 4WD 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 12,610 lbsGooseneck: 12,610 lbs
24,500 lbs24,500 lbs24,500 lbs
No additional row condition listed p.8 Exact
Double / Standard / 4WD 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 17,890 lbsGooseneck: 17,890 lbs
26,000 lbs26,000 lbs26,000 lbs
No additional row condition listed p.6 Exact
Engine group

6.6L Gas V8

14,500–17,370 lbs

Towing Capacity Chart

6.6L Gas V8 configurations

24 groups 18 exact 6 equipment-conditioned 14,500 to 17,370 lbs published
Crew / Long / 2WD 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 16,840 lbsGooseneck: 16,840 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.8 Exact
Crew / Long / 2WD 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 16,840 lbsGooseneck: 16,840 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Exact
Crew / Long / 4WD 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 16,550 lbsGooseneck: 16,550 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.8 Exact
Crew / Long / 4WD / AT4 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 16,270 lbsGooseneck: 16,270 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Equipment check
Crew / Long / 4WD / Denali 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 16,150 lbsGooseneck: 16,150 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Equipment check
Crew / Long / 4WD 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 16,550 lbsGooseneck: 16,550 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Equipment check
Double / Long / 2WD 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 16,930 lbsGooseneck: 16,930 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.8 Exact
Double / Long / 2WD 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 16,930 lbsGooseneck: 16,930 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Exact
Double / Long / 4WD 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 16,650 lbsGooseneck: 16,650 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.8 Exact
Double / Long / 4WD 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 16,650 lbsGooseneck: 16,650 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Exact
Regular / Long / 2WD 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 17,370 lbsGooseneck: 17,370 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Exact
Regular / Long / 2WD 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 17,370 lbsGooseneck: 17,370 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.8 Exact
Regular / Long / 4WD 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 17,060 lbsGooseneck: 17,060 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.8 Exact
Regular / Long / 4WD 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 17,060 lbsGooseneck: 17,060 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Exact
Crew / Standard / 2WD 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 16,940 lbsGooseneck: 16,940 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.8 Exact
Crew / Standard / 2WD 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 16,940 lbsGooseneck: 16,940 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Exact
Crew / Standard / 4WD 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 16,650 lbsGooseneck: 16,650 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.8 Exact
Crew / Standard / 4WD / AT4 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 16,380 lbsGooseneck: 16,380 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Equipment check
Crew / Standard / 4WD / Denali 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 16,260 lbsGooseneck: 16,260 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Equipment check
Crew / Standard / 4WD 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 16,650 lbsGooseneck: 16,650 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Equipment check
Double / Standard / 2WD 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 17,050 lbsGooseneck: 17,050 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.8 Exact
Double / Standard / 2WD 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 17,050 lbsGooseneck: 17,050 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Exact
Double / Standard / 4WD 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 16,740 lbsGooseneck: 16,740 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.8 Exact
Double / Standard / 4WD 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 16,740 lbsGooseneck: 16,740 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Exact
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 2021 Sierra 2500 HD chart ratings.

Show source pages for the 2021 guide
DOC_ID: 2021-GMC DOCUMENT BASIS

2021-GMC-Trailering-Guide

Audit Scope PAGES: 6-8