2020 GMC Sierra 2500HD V (GMTT1XX) Crew Cab Long Bed Dimensions, Size & Specs

Production
Model Year:2020
Production Years:2020 - 2023 discontinued in 2023
2023 mm79.6 in6.6 ft
6759 mm266.1 in22.2 ft
2023 mm79.6 in6.6 ft
6759 mm266.1 in22.2 ft
2023 mm79.6 in6.6 ft
2079 mm81.9 in6.8 ft
2023 mm79.6 in6.6 ft
2079 mm81.9 in6.8 ft
2023 mm79.6 in6.6 ft
6759 mm266.1 in22.2 ft
2023 mm79.6 in6.6 ft
2079 mm81.9 in6.8 ft
2023 mm79.6 in6.6 ft
2079 mm81.9 in6.8 ft
Length
6759 mm266.1 in22.2 ft
Width
2079 mm81.9 in6.8 ft
Height
2023 mm79.6 in6.6 ft
Technical Details

Exterior Dimensions

Precise measurements of the 2020 GMC Sierra 2500HD V Crew Cab Long Bed, engineered for optimal performance and comfort

Dimensions
Length:6759 mm266.1 in22.2 ft
Width (Opened Mirrors):2079 mm81.9 in6.8 ft
Height:2023 mm79.6 in6.6 ft
Ground Clearance:256 mm10.1 in0.8 ft
Weight Specifications
Curb Weight:3009 - 3577 kg6634 - 7886 lbs
Maximal permitted Weight:4672 - 5158 kg10300 - 11371 lbs
Tire Specifications
Rims Sizes:7.5J x 17, 8J x 18, 8.5J x 20
Tire Sizes:265/70 R17 (W:265 | H:70 | D:17)
245/75 R17 (W:245 | H:75 | D:17)
275/70 R18 (W:275 | H:70 | D:18)
265/70 R18 (W:265 | H:70 | D:18)
265/60 R20 (W:265 | H:60 | D:20)
Useful Information

About 2020 GMC Sierra 2500HD V Crew Cab Long Bed

The GMC Sierra 2500HD V (GMTT1XX) Crew Cab Long Bed, produced from 2020 to 2023, is a robust heavy-duty pickup truck designed for maximum utility and performance. With a substantial length of 6759 mm (266 inches), it offers an extended bed ideal for hauling large loads, while maintaining a width of 2079 mm (81.8 inches) including opened mirrors, providing a wide stance for stability and road presence. The vehicle stands tall at 2023 mm (79.6 inches), reflecting its commanding profile and roominess inside the Crew Cab configuration.

Weight varies significantly depending on configuration, with a curb weight ranging from 3009 kg to 3577 kg (6632 to 7885 lbs), and a maximum gross weight between 4672 kg and 5158 kg (10300 to 11370 lbs), demonstrating its capability to manage substantial payloads and towing demands.

The Sierra 2500HD Crew Cab Long Bed features a generous ground clearance of 256 mm (10 inches), enabling it to handle rough terrain and off-road conditions with ease, which is essential for a heavy-duty pickup truck. The truck rides on various rim sizes from 7.5J x 17 up to 8.5J x 20, paired with multiple tire sizes including 265/70 R17, 245/75 R17, 275/70 R18, 265/70 R18, and 265/60 R20, providing versatility and adaptability depending on usage needs.

Overall, the 2020-2023 GMC Sierra 2500HD V Crew Cab Long Bed blends substantial dimensions, heavy payload capacity, and flexible configurations to meet the demanding needs of professional users and enthusiasts who require dependable performance coupled with spacious comfort.

Exceptional Features

2020 GMC Sierra 2500HD V Crew Cab Long Bed Highlights

Discover the standout features that make the 2020 GMC Sierra 2500HD V Crew Cab Long Bed a leader in its class

Powerful Engine Options

The 2020 GMC Sierra 2500HD offers robust engine choices including a 6.6L V8 gas engine and a 6.6L Duramax Turbo-Diesel V8, delivering impressive power and torque for heavy-duty tasks.

Crew Cab Spacious Interior

The Crew Cab configuration provides ample interior space with comfortable seating for up to six passengers and additional rear legroom, enhancing comfort on long drives.

Long Bed Cargo Capacity

Equipped with a long bed, the truck offers a larger cargo area ideal for hauling oversized equipment, tools, or materials, making it suitable for commercial and personal use.

Advanced Trailering Technologies

Features such as the Trailer Sway Control, Hill Start Assist, and integrated trailer brake controller ensure safer and easier towing experiences.

Durable and Functional Design

Built on the GMTT1XX platform, the Sierra 2500HD boasts a sturdy frame, advanced suspension system, and a user-friendly tailgate with multi-function capabilities for enhanced utility.
Frequently Asked Questions

FAQ

Have a question? Please check our knowledgebase first.

The 2020-2023 GMC Sierra 2500HD V (GMTT1XX) Crew Cab Long Bed measures 6759 mm (265.9 inches) in length, 2079 mm (81.8 inches) wide with mirrors opened, and stands 2023 mm (79.6 inches) tall. These dimensions give it a substantial presence on the road, reflecting its heavy-duty pickup truck classification. The long bed and crew cab configuration provide extra cargo capacity and passenger comfort, making it a versatile work and lifestyle vehicle.

The curb weight of the 2020-2023 GMC Sierra 2500HD V Crew Cab Long Bed ranges from 3009 kg to 3577 kg (approximately 6633 to 7885 pounds), depending on the variation and optional equipment. This weight reflects the truck's robust construction and heavy-duty capabilities. Heavier weight helps with stability and towing capacity but can impact fuel efficiency and maneuverability. The truck's suspension and powertrain are engineered to manage this weight effectively, balancing power and control for heavy hauling and off-road performance.

The 'Long Bed' designation in the 2020-2023 GMC Sierra 2500HD V Crew Cab means it comes with an extended cargo bed length compared to standard or short-bed variants. While specific bed length metrics aren’t listed in the given data, traditionally, long beds on heavy-duty trucks like this are approximately 2440 mm (96 inches) long. This extended bed length allows for hauling larger and longer loads, making the Sierra 2500HD ideal for contractors, landscapers, and those who require significant cargo capacity without compromising passenger space in the crew cab.

The total width of the GMC Sierra 2500HD V Crew Cab Long Bed with mirrors extended is 2079 mm (81.8 inches). This width is considerably wider than the vehicle’s body width, which means drivers need to be cautious when navigating narrow parking spaces, garage entrances, or crowded urban roads. The extended mirror width can make tight maneuvers more challenging, and it's important to take mirror width into account when parking or passing through narrow passages to prevent collisions or scraping.

The GMC Sierra 2500HD V Crew Cab Long Bed offers a ground clearance of 256 mm (10.1 inches). This elevated ride height is beneficial for off-road driving and uneven terrain, as it allows the truck to clear obstacles like rocks, ruts, and debris without damaging the undercarriage. Additionally, higher ground clearance helps in tackling deep snow, mud, or water crossings, making it a suitable choice for work sites or recreational off-road activities where rugged conditions are common.

Standard residential garages typically measure around 2440 mm (8 feet) wide by 4880 mm (16 feet) deep with a height of about 2130-2440 mm (7-8 feet). The GMC Sierra 2500HD V Crew Cab Long Bed, with a length of 6759 mm (265.9 inches or approximately 22.16 feet) and width of 2079 mm (81.8 inches or nearly 6.8 feet with mirrors extended), exceeds normal garage length considerably and is also wider with mirrors out. Therefore, it generally will not fit comfortably in a standard single-car garage, particularly if you open the mirrors or include additional equipment.

Compared with the previous generation GMC Sierra 2500HD pickups, the 2020-2023 V (GMTT1XX) Crew Cab Long Bed generally features a slight increase in length and width to accommodate advances in design, safety, and comfort. The newer truck’s length of 6759 mm (265.9 inches) and width of 2079 mm (81.8 inches) reflect a trend toward larger trucks to meet consumer demand for more interior space and cargo capacity. While exact predecessor dimensions vary with configuration, the 5th generation Sierra 2500HD tends to be more spacious, refined, and better equipped, enhancing usability without sacrificing ruggedness.

When compared to similar heavy-duty pickups like the Ford F-250 Super Duty and Ram 2500 heavy-duty pickups, the GMC Sierra 2500HD V Crew Cab Long Bed stands very competitive in size and cargo capability. Its length of 6759 mm (265.9 inches) and width of 2079 mm (81.8 inches) are on par or slightly larger than many rivals, matching or exceeding bed lengths and cabin spaciousness. In terms of weight, curb weight ranges up to 3577 kg (7885 lbs) and max weight around 5158 kg (11374 lbs) reflect its solid build and heavy-duty engineering. The Sierra is known for a blend of luxury, capability, and technology upgrades in its class.

The GMC Sierra 2500HD V Crew Cab Long Bed comes with a variety of rim sizes ranging from 17 to 20 inches, including rim widths of 7.5J, 8J, 8.5J, and 20 inches. Tire sizes include 265/70 R17, 245/75 R17, 275/70 R18, 265/70 R18, and 265/60 R20. Larger rims and tires can enhance traction, load capacity, and aesthetics but may slightly affect fuel economy and ride comfort. The diverse tire and rim options allow buyers to prioritize towing, off-road performance, or highway comfort depending on their requirements.

The maximum weight for the Sierra 2500HD V Crew Cab Long Bed ranges between 4672 kg and 5158 kg (10,300 to 11,370 pounds), which includes the vehicle's curb weight plus its payload. This high maximum weight rating supports impressive towing and payload capacities—key factors for users requiring heavy-duty hauling and trailer towing. It enables the truck to manage large trailers, boats, or heavy equipment, making it an ideal workhorse for construction, agriculture, and recreational towing tasks.

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