2020 GMC Sierra 3500 Accessories & Parts

One-ton pickup truck buyers expect much from their future workhorse. These big demands call for serious towing and hauling capability for both work and play, and the GMC Sierra 3500 meets them all while offering high levels of comfort and luxury. The all-new next-generation 2020 Sierra HD is beefier, more rugged-looking, and more technically-advanced than before. It is a premium pickup truck that is smart and easy to live with. GM’s new heavy-duty model adds more sophistication than the norm, but it is still a professional-grade HD pickup to the core. The lineup includes the opulent Denali trim and the AT4 model that packs a multitude of off-road accessories and parts, giving customers more choices.

For starters, the major highlight of the new-gen GMC Sierra 3500 is its 30,000-lb towing capacity. That pulling power comes from a 6.6-liter turbodiesel by Duramax that puts out 445 hp and 910 pound-feet of torque. To make it operate more efficiently, GM upgraded the air induction system and some of the cooling parts, including the radiator and fan. Now this engine is mated to a heavy-duty Allison transmission, which is the only 10-speed automatic in the segment to date. Whatever the load and terrain, this gearbox optimizes engine performance by ensuring closer gear spacing. The 2020 GMC Sierra HD got a larger, more robust frame and beefed-up rear axle parts for higher weight ratings and more efficient power delivery. As always, this truck is available with single and dual rear wheels.

The redesigned Sierra 3500 looks much like its half-ton cousin. Its design is more subtle than that of the recently-introduced Silverado HD. Although, the truck still makes a bold statement. There’s a more massive grille up front, which extends into the distinctive C-shaped headlights. The hood line was raised a bit and the vehicle has grown in the overall length, now having a more impressive look. Among the truck’s new functional features are integrated steps on bed sides and the brand’s ingenious MultiPro tailgate that offers several bed access and storage options. The bed now sits one inch lower to ease loading and unloading.

The interior of GMC’s heavy-duty pickup is roomier than before. The head- and legroom for the front occupants is claimed to be the best in class. Crew-cab versions now provide 3 inches more legroom for those sitting in the second row. The 2020 GMC Sierra 3500 accessories that are exclusive to the Denali model include leather seats, unique wood inserts, and dark aluminum trim. Tech-wise, the new Sierra HD is more impressive than before. While offering all niceties expected from a modern pickup truck, including a 15-inch headup display and Android Auto & Apple CarPlay functionality, it gains the state-of-the-art ProGrade trailering system. In the "Transparent Trailer" mode, it combines camera shots and projects a trailer-free view of what’s behind the truck on a screen.

The trail-ready AT4 version adds a range of off-road-oriented 2020 GMC Sierra 3500 parts, including a locking rear differential, a skid plate that protects the underbody, and all-terrain rubber on 18- or 20-inch rims. The suspension with Rancho shocks is specifically tuned for the rigors of going off pavement, while features like hill descent control and hill start assist further improve the truck’s performance on rugged terrain. For all those who want even greater off-road capability and aggressive visuals, the aftermarket is readily available with an array of 2020 GMC Sierra 3500 accessories and parts.

Want to make your 2020 GMC Sierra 3500 one of a kind, keep it running at its peak, or turn it into a high-powered beast? Our vast selection of premium accessories and parts ticks all the boxes. Quality is at the heart of everything we do at CARiD, so whatever your project, our brand name products and qualified experts will ensure success. Class. Luxury. Durability. We have it all, and we're always here with everything you need to keep your 2020 GMC Sierra 3500 in tip top shape, inside and out.