2026 GMC Sierra 3500HD dimensions: length, width, height, weight, cargo
Length
266.1in long
- 22 ft 2.1 in. 6.76 m.
- 81.9 in wide, 80.7 in tall.
- Pro Regular Cab LB RWD.
- Full-size truck.
Dimensions by trim
| Trim | Length | Width | With mirrors | Height | Wheelbase | Ground clearance | Turning circle |
|---|---|---|---|---|---|---|---|
| Pro Regular Cab LB RWD, Pro Regular Cab LB DRW RWD, Pro Double Cab LB RWD, Pro Regular Cab LB 4WD, Pro Double Cab LB DRW RWD, Pro Regular Cab LB DRW 4WD, Pro Double Cab LB 4WD, Pro Crew Cab LB DRW RWD, Pro Double Cab LB DRW 4WD, SLE Regular Cab LB 4WD, Pro Crew Cab LB DRW 4WD, SLE Regular Cab LB DRW 4WD, SLE Double Cab LB 4WD, SLE Double Cab LB DRW 4WD, SLE Crew Cab LB DRW 4WD, SLT Crew Cab LB DRW 4WD, Denali Crew Cab LB DRW 4WD, Denali Ultimate Crew Cab LB DRW 4WD | 266.1 in | 81.9 in | 81.8 in | 80.7 in | 172.0 in | N/A | 57.0 ft |
| Pro Crew Cab RWD, Pro Crew Cab 4WD, SLE Crew Cab 4WD, SLT Crew Cab 4WD, AT4 Crew Cab 4WD, Denali Crew Cab 4WD, Denali Ultimate Crew Cab 4WD | 235.4 in to 266.1 in | 81.8 in | 81.8 in | 80.9 in | 158.9 in | 11.2 in | 52.7 ft |
| Pro Crew Cab LB RWD, Pro Crew Cab LB 4WD, SLE Crew Cab LB 4WD, SLT Crew Cab LB 4WD, AT4 Crew Cab LB 4WD, Denali Crew Cab LB 4WD, Denali Ultimate Crew Cab LB 4WD | 235.4 in to 266.8 in | 81.8 in | 81.8 in | 80.7 in | 172.0 in | 11.1 in | 57.0 ft |
| 2WD Double Cab 162" Pro, 4WD Double Cab 162" Pro, 4WD Double Cab 162" SLE | 235.4 in to 266.1 in | 81.8 in | 81.8 in | 80.9 in | 162.5 in | 11.2 in | 53.9 ft |
| 2WD Reg Cab 142" Pro, 4WD Reg Cab 142" Pro, 4WD Reg Cab 142" SLE | 235.4 in to 266.1 in | 81.8 in | 81.8 in | 80.9 in | 141.6 in | 11.2 in | 46.9 ft |
| Trim | Curb weight | GVWR | Payload |
|---|---|---|---|
| Pro Regular Cab LB RWD, Pro Regular Cab LB DRW RWD, Pro Double Cab LB RWD, Pro Regular Cab LB 4WD, Pro Double Cab LB DRW RWD, Pro Regular Cab LB DRW 4WD, Pro Double Cab LB 4WD, Pro Crew Cab LB DRW RWD, Pro Double Cab LB DRW 4WD, SLE Regular Cab LB 4WD, Pro Crew Cab LB DRW 4WD, SLE Regular Cab LB DRW 4WD, SLE Double Cab LB 4WD, SLE Double Cab LB DRW 4WD, SLE Crew Cab LB DRW 4WD, SLT Crew Cab LB DRW 4WD, Denali Crew Cab LB DRW 4WD, Denali Ultimate Crew Cab LB DRW 4WD | N/A | N/A | N/A |
| Pro Crew Cab RWD | 6,338 lb to 6,887 lb | 11,000 lb | 4,360 lb |
| Pro Crew Cab LB RWD | 6,782 lb | 11,350 lb | 4,568 lb |
| Pro Crew Cab 4WD, SLE Crew Cab 4WD, SLT Crew Cab 4WD, AT4 Crew Cab 4WD, Denali Crew Cab 4WD | 6,636 lb to 7,172 lb | 11,550 lb | 4,590 lb |
| Pro Crew Cab LB 4WD, SLE Crew Cab LB 4WD, SLT Crew Cab LB 4WD, AT4 Crew Cab LB 4WD, Denali Crew Cab LB 4WD | 7,060 lb | 11,500 lb | 4,440 lb |
| Denali Ultimate Crew Cab 4WD | 6,636 lb to 7,172 lb | 12,100 lb | 5,140 lb |
| Denali Ultimate Crew Cab LB 4WD | 7,060 lb | 12,250 lb | 5,190 lb |
| 2WD Double Cab 162" Pro | 6,338 lb to 6,887 lb | 11,300 lb | 4,631 lb |
| 4WD Double Cab 162" Pro, 4WD Double Cab 162" SLE | 6,977 lb | 11,400 lb | 4,423 lb |
| 2WD Reg Cab 142" Pro | 6,211 lb to 6,887 lb | 10,950 lb | 4,739 lb |
| 4WD Reg Cab 142" Pro, 4WD Reg Cab 142" SLE | 6,586 lb | 11,300 lb | 4,714 lb |
| Trim | Front legroom | Rear legroom | Front headroom | Rear headroom |
|---|---|---|---|---|
| Pro Regular Cab LB RWD, Pro Regular Cab LB DRW RWD, Pro Double Cab LB RWD, Pro Regular Cab LB 4WD, Pro Double Cab LB DRW RWD, Pro Regular Cab LB DRW 4WD, Pro Double Cab LB 4WD, Pro Crew Cab LB DRW RWD, Pro Double Cab LB DRW 4WD, SLE Regular Cab LB 4WD, Pro Crew Cab LB DRW 4WD, SLE Regular Cab LB DRW 4WD, SLE Double Cab LB 4WD, SLE Double Cab LB DRW 4WD, SLE Crew Cab LB DRW 4WD, SLT Crew Cab LB DRW 4WD, Denali Crew Cab LB DRW 4WD, Denali Ultimate Crew Cab LB DRW 4WD | 44.5 in | 43.4 in | 39.9 in | 40.1 in |
| Pro Crew Cab RWD, Pro Crew Cab LB RWD, Pro Crew Cab 4WD, Pro Crew Cab LB 4WD, SLE Crew Cab 4WD, SLE Crew Cab LB 4WD, SLT Crew Cab 4WD, SLT Crew Cab LB 4WD, AT4 Crew Cab 4WD, AT4 Crew Cab LB 4WD, Denali Crew Cab 4WD, Denali Crew Cab LB 4WD, Denali Ultimate Crew Cab 4WD, Denali Ultimate Crew Cab LB 4WD | 44.5 in | 43.4 in | 39.9 in | 40.1 in |
| 2WD Double Cab 162" Pro, 4WD Double Cab 162" Pro, 4WD Double Cab 162" SLE | 44.5 in | 35.2 in | 43.0 in | 39.9 in |
| 2WD Reg Cab 142" Pro, 4WD Reg Cab 142" Pro, 4WD Reg Cab 142" SLE | 44.5 in | 43.4 in | 43.1 in | 40.1 in |
Weight
Pro Regular Cab LB RWD: curb weight not listed.
Garage fit
| Garage | Fits | Spare length | Each side |
|---|---|---|---|
| Single, 12 x 22 ft | No | -2.1 in | 31.0 in |
| Single, 14 x 24 ft | Yes | 21.9 in | 43.0 in |
| Double, 20 x 20 ft | No | -26.1 in | 79.0 in |
| Double, 24 x 24 ft | Yes | 21.9 in | 103.0 in |
| Door | Fits | Spare width | Above roof |
|---|---|---|---|
| 8 ft wide, 7 ft tall | Yes | 14.1 in | 3.3 in |
| 9 ft wide, 7 ft tall | Yes | 26.1 in | 3.3 in |
Your garage
Second car
Garage 12 x 22 ft. Door 9 x 7 ft.
- No. Too long by 2.1 in.
- Door: 26.1 in spare width. 3.3 in above the roof.
Size class
Full-size truck.
Longest of 22 trucks (2026).
Median of 22 trucks (2026): 216.9 in long.
Bigger and smaller rivals
| Model | Length | vs Sierra 3500HD |
|---|---|---|
| GMC Sierra 3500HD | 266.1 in | - |
| Toyota Tundra | 233.6 in | -32.5 in |
| GMC Sierra EV | 233.4 in | -32.7 in |
| Chevrolet Silverado EV | 233.1 in | -33.0 in |
| RAM 1500 | 232.9 in | -33.2 in |
Legroom and headroom
Pro Regular Cab LB RWD.
- Front legroom
- 44.5 inMore than 80% of 21 trucks (2026).
- Rear legroom
- 43.4 inMore than 70% of 21 trucks (2026).
- Front headroom
- 39.9 inMore than 10% of 21 trucks (2026).
- Rear headroom
- 40.1 inMore than 80% of 21 trucks (2026).
What this cannot tell you
Outline is a body-style template scaled to these numbers.
Garage fit ignores shelves, steps and open doors.
- 2 or more sources
- 1 source
- Model-level, rule or estimate
- Sources disagree