2021 GMC Sierra 3500 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 3500 HD years Return to the available model years →

38 configuration groups · 114 published rating outcomes

Published Max
36,000 LBS
Rating Groups
38
Equipment Checks
17
ENGINE GROUPS

Published Ratings by Engine

Your engine determines your base towing limit. Start here to see the 2021 ratings for your specific Sierra 3500 HD configuration.

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

6.6L Duramax Turbo Diesel V8 19 configuration groups
Range: 14,500–36,000 lbs
Published max 36,000 LBS
6.6L Gas V8 19 configuration groups
Range: 14,500–17,200 lbs
Published max 17,200 LBS
2021 Sierra 3500 HD towing chart
Engine group

6.6L Duramax Turbo Diesel V8

14,500–36,000 lbs

Towing Capacity Chart

6.6L Duramax Turbo Diesel V8 configurations

19 groups 10 exact 9 equipment-conditioned 14,500 to 36,000 lbs published
Crew / Long / 2WD / SRW 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 20,000 lbsFifth-wheel: 21,330 lbsGooseneck: 21,330 lbs
29,700 lbs29,700 lbs29,700 lbs
No additional row condition listed p.6 Exact
Crew / Long / 2WD / DRW 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 20,000 lbsFifth-wheel: 31,400 lbsGooseneck: 31,400 lbs
40,000 lbs40,000 lbs40,000 lbs
No additional row condition listed p.6 Exact
Crew / Long / 4WD / SRW / AT4 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 20,000 lbsFifth-wheel: 21,010 lbsGooseneck: 21,010 lbs
29,700 lbs29,700 lbs29,700 lbs
No additional row condition listed p.6 Equipment check
Crew / Long / 4WD / SRW / Denali 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 20,000 lbsFifth-wheel: 20,890 lbsGooseneck: 20,890 lbs
29,700 lbs29,700 lbs29,700 lbs
No additional row condition listed p.6 Equipment check
Crew / Long / 4WD / SRW 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 20,000 lbsFifth-wheel: 21,040 lbsGooseneck: 21,040 lbs
29,700 lbs29,700 lbs29,700 lbs
No additional row condition listed p.6 Equipment check
Crew / Long / 4WD / DRW / Denali 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 20,000 lbsFifth-wheel: 30,990 lbsGooseneck: 30,990 lbs
40,000 lbs40,000 lbs40,000 lbs
No additional row condition listed p.6 Equipment check
Crew / Long / 4WD / DRW 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 20,000 lbsFifth-wheel: 31,180 lbsGooseneck: 31,180 lbs
40,000 lbs40,000 lbs40,000 lbs
No additional row condition listed p.6 Equipment check
Double / Long / 2WD / SRW 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 21,490 lbsGooseneck: 21,490 lbs
29,700 lbs29,700 lbs29,700 lbs
No additional row condition listed p.6 Exact
Double / Long / 2WD / DRW 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 20,000 lbsFifth-wheel: 31,500 lbsGooseneck: 31,500 lbs
40,000 lbs40,000 lbs40,000 lbs
No additional row condition listed p.6 Exact
Double / Long / 4WD / SRW 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 21,210 lbsGooseneck: 21,210 lbs
29,700 lbs29,700 lbs29,700 lbs
No additional row condition listed p.6 Exact
Double / Long / 4WD / DRW 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 20,000 lbsFifth-wheel: 31,340 lbsGooseneck: 31,340 lbs
40,000 lbs40,000 lbs40,000 lbs
No additional row condition listed p.6 Exact
Regular / Long / 2WD / SRW 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 21,500 lbsGooseneck: 21,500 lbs
29,700 lbs29,700 lbs29,700 lbs
No additional row condition listed p.6 Exact
Regular / Long / 2WD / DRW 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 20,000 lbsFifth-wheel: 32,000 lbsGooseneck: 36,000 lbs
43,900 lbs43,900 lbs43,900 lbs
Requires available Max Trailering Package and gooseneck hitch. p.6 Equipment check
Regular / Long / 4WD / SRW 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 21,500 lbsGooseneck: 21,500 lbs
29,700 lbs29,700 lbs29,700 lbs
No additional row condition listed p.6 Exact
Regular / Long / 4WD / DRW 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 20,000 lbsFifth-wheel: 31,760 lbsGooseneck: 31,760 lbs
40,000 lbs40,000 lbs40,000 lbs
No additional row condition listed p.6 Exact
Crew / Standard / 2WD / SRW 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 20,000 lbsFifth-wheel: 21,500 lbsGooseneck: 21,500 lbs
29,700 lbs29,700 lbs29,700 lbs
No additional row condition listed p.6 Exact
Crew / Standard / 4WD / SRW / AT4 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 20,000 lbsFifth-wheel: 21,130 lbsGooseneck: 21,130 lbs
29,700 lbs29,700 lbs29,700 lbs
No additional row condition listed p.6 Equipment check
Crew / Standard / 4WD / SRW / Denali 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 20,000 lbsFifth-wheel: 21,010 lbsGooseneck: 21,010 lbs
29,700 lbs29,700 lbs29,700 lbs
No additional row condition listed p.6 Equipment check
Crew / Standard / 4WD / SRW 6.6L Duramax Turbo Diesel V8 Not listed
Conventional: 20,000 lbsFifth-wheel: 21,300 lbsGooseneck: 21,300 lbs
29,700 lbs29,700 lbs29,700 lbs
No additional row condition listed p.6 Equipment check
Engine group

6.6L Gas V8

14,500–17,200 lbs

Towing Capacity Chart

6.6L Gas V8 configurations

19 groups 11 exact 8 equipment-conditioned 14,500 to 17,200 lbs published
Crew / Long / 2WD / SRW 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 16,700 lbsGooseneck: 16,700 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Exact
Crew / Long / 2WD / DRW 6.6L Gas V8 Not listed
Conventional: 16,300 lbsFifth-wheel: 16,200 lbsGooseneck: 16,200 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Exact
Crew / Long / 4WD / SRW / AT4 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 16,210 lbsGooseneck: 16,210 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Equipment check
Crew / Long / 4WD / SRW / Denali 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 16,090 lbsGooseneck: 16,090 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Equipment check
Crew / Long / 4WD / SRW 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 16,410 lbsGooseneck: 16,410 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Equipment check
Crew / Long / 4WD / DRW / Denali 6.6L Gas V8 Not listed
Conventional: 16,010 lbsFifth-wheel: 15,890 lbsGooseneck: 15,890 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Equipment check
Crew / Long / 4WD / DRW 6.6L Gas V8 Not listed
Conventional: 16,240 lbsFifth-wheel: 16,120 lbsGooseneck: 16,120 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Equipment check
Double / Long / 2WD / SRW 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 16,700 lbsGooseneck: 16,700 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Exact
Double / Long / 2WD / DRW 6.6L Gas V8 Not listed
Conventional: 16,400 lbsFifth-wheel: 16,400 lbsGooseneck: 16,400 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Exact
Double / Long / 4WD / SRW 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 16,500 lbsGooseneck: 16,500 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Exact
Double / Long / 4WD / DRW 6.6L Gas V8 Not listed
Conventional: 16,390 lbsFifth-wheel: 16,270 lbsGooseneck: 16,270 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Exact
Regular / Long / 2WD / SRW 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 17,200 lbsGooseneck: 17,200 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Exact
Regular / Long / 2WD / DRW 6.6L Gas V8 Not listed
Conventional: 16,800 lbsFifth-wheel: 16,800 lbsGooseneck: 16,800 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Exact
Regular / Long / 4WD / SRW 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 16,950 lbsGooseneck: 16,950 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Exact
Regular / Long / 4WD / DRW 6.6L Gas V8 Not listed
Conventional: 16,800 lbsFifth-wheel: 16,710 lbsGooseneck: 16,710 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Exact
Crew / Standard / 2WD / SRW 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 16,700 lbsGooseneck: 16,700 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Exact
Crew / Standard / 4WD / SRW / AT4 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 16,330 lbsGooseneck: 16,330 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Equipment check
Crew / Standard / 4WD / SRW / Denali 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 16,210 lbsGooseneck: 16,210 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 Equipment check
Crew / Standard / 4WD / SRW 6.6L Gas V8 Not listed
Conventional: 14,500 lbsFifth-wheel: 16,530 lbsGooseneck: 16,530 lbs
24,000 lbs24,000 lbs24,000 lbs
No additional row condition listed p.7 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 2021 Sierra 3500 HD chart ratings.

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

2021-GMC-Trailering-Guide

Audit Scope PAGES: 6-7