2020 GMC Sierra 3500HD V (GMTT1XX) Regular Cab Long Bed Dimensions, Size & Specs

Fitting the 2020 GMC Sierra 3500HD V Regular Cab Long Bed into a standard residential garage can be challenging due to its substantial size. With a length of 5982 mm (235.3 inches) and a width up to 2457 mm (96.7 inches) including mirrors, many typical single-car garages measuring around 6 meters (20 feet) by 3 meters (10 feet) might be too small. Additionally, the vehicle’s height of approximately 2047 mm (80.5 inches) is within most garage door height limits but requires clearance. Owners should verify their garage dimensions carefully and may need to park the Sierra 3500HD outside or in specialized vehicle storage areas designed for heavy-duty trucks.

The 2020 GMC Sierra 3500HD V has a curb weight ranging between 2826 kg (6233 lbs) and 3523 kg (7768 lbs), reflecting variations in trim and equipment. Its maximum permissible weight ranges from 4785 kg (10,550 lbs) to 6350 kg (14,000 lbs). This considerable maximum weight capacity underscores the Sierra’s heavy-duty construction, enabling it to tow large trailers and carry substantial payloads. The high payload and towing capabilities are ideal for commercial applications, construction, and hauling heavy equipment. Drivers should always ensure adherence to these limits to maintain safety and compliance with vehicle regulations.

The ride height or ground clearance of the GMC Sierra 3500HD V ranges from 266 mm (10.5 inches) to 285 mm (11.2 inches). This level of clearance is advantageous for traversing rough or uneven terrains encountered on worksites or off-road conditions. It helps prevent underbody damage from rocks, debris, and obstacles while enhancing the approach and departure angles critical for off-roading and accessing difficult job sites. The robust ground clearance, combined with the truck’s heavy-duty design, makes the Sierra 3500HD suitable for rugged applications and tough environments where standard pickups might struggle.

The 2020 GMC Sierra 3500HD V Regular Cab Long Bed offers a variety of tire and rim sizes to accommodate different performance needs. Rims include sizes of 7.5J x 17, 8J x 18, 8.5J x 18, and 8.5J x 20 inches. Tire sizes available are 265/70 R17, 245/75 R17, 275/70 R18, 235/80 R17, 265/70 R18, and 265/60 R20. Larger rims and wider tires, like the 20-inch options, provide enhanced on-road stability and better appearance but may impact ride comfort slightly. Smaller diameter tires improve off-road capability and ride absorbance. Each combination balances payload, traction, and ride quality, allowing buyers to choose based on driving conditions and intended use.

When the mirrors of the 2020 GMC Sierra 3500HD V Regular Cab Long Bed are opened, the truck’s width stretches to about 2457 mm (96.7 inches), which exceeds the typical standard traffic lane width of approximately 3 to 3.5 meters (9.8 to 11.5 feet). This wide dimension requires careful maneuvering, especially on narrow roads, construction sites, or tight city streets. Drivers need to be attentive to mirror clearance to avoid scraping or collisions with other vehicles or obstacles. The extended width enhances visibility and safety when towing but mandates spatial awareness and cautious navigation.

Compared to its predecessor, the 2020 GMC Sierra 3500HD V (GMTT1XX) in Regular Cab Long Bed configuration generally exhibits slight increases in length and width, emphasizing improved cargo capacity and stability. The prior generation measured marginally less in length and sometimes had a slightly narrower track, reflecting industry trends toward larger trucks to meet increasing payload and towing demands. Height and ground clearance remain competitive to retain off-road and worksite functionality. This evolution translates into enhanced utility while maintaining maneuverability consistent with previous models, ensuring that owners gain improvements without sacrificing practicality.

The GMC Sierra 3500HD V Regular Cab Long Bed is competitively sized within the heavy-duty pickup segment, matching or exceeding dimensions of rivals like the Ford F-350 Super Duty and Ram 3500. Its length of nearly 6 meters (19.6 feet) and wide stance are typical of trucks built for heavy towing and hauling. Weight and ground clearance figures also align closely with competitor vehicles, ensuring it performs similarly in payload capacity and off-road readiness. What sets the Sierra apart is its specific combination of GMC's proprietary engineering, available features, and brand reputation for luxury-oriented heavy-duty trucks, making it a strong contender in its class.

The 2020 GMC Sierra 3500HD V Regular Cab Long Bed features a straightforward, functional cabin designed primarily with work utility in mind. As a Regular Cab, it typically provides seating for two to three passengers in a single row. While interior space is focused more on durability and work-related comfort rather than luxury, higher trim levels offer enhanced materials and technology features. The Long Bed configuration maximizes cargo capacity behind the cab, which is especially valuable for users needing to carry large tools or materials. Overall, the cabin balances practicality with comfort suited for long workdays.

The 2020 GMC Sierra 3500HD V Regular Cab Long Bed is designed as a powerhouse for heavy-duty tasks. With curb weights between 2826 kg (6233 lbs) and 3523 kg (7768 lbs), and a maximum gross vehicle weight rating (GVWR) ranging from 4785 kg (10,550 lbs) to 6350 kg (14,000 lbs), it supports very high payloads and substantial towing capacities. The Long Bed configuration increases cargo volume, facilitating transport of large items. The truck’s robust frame, advanced towing assist technologies, and available trailering packages enhance safety and ease of hauling heavy trailers. These features place it favorably among top-tier pickups optimized for construction, farming, and commercial work.