2021 GMC Sierra 2500 Accessories & Parts

Whether it’s towing big toys or hauling construction materials, the GMC Sierra HD shines when put to work. The half-ton Sierra 2500 impresses with its performance and practicality. It offers a strong and smooth diesel engine that makes the truck capable of towing an 18,500-pound trailer and carrying 3,979 pounds in its bed when equipped with the right parts. The 2500HD’s interior room is simply massive. Its bed is wide and capacious, while the functionality of the tailgate can be further improved if you choose the MultiPro option. In addition to five trim levels, buyers can pick from a multitude of packages, many of which are new for 2021. Despite a diverse array of choices offered from the factory, there’s sure to be something that you need to add in order to tailor your truck to the way you use it. In our 2021 GMC Sierra 2500 accessories and parts selection, you’ll find tonneau covers, cargo management systems, protective accessories, and everything else needed to make your vehicle ready for any type of work.

For its sophomore year, the fourth-generation Sierra 2500HD gets some functional updates. Important is the addition of new features to the truck’s trailering technology. Among the noteworthy features, there are a Trailer Length Indicator, which allows for safer lane changing by monitoring traffic and other obstructions that may come in the way, and a Jack-Knife Alert, which warns the driver about the possibility of a trailer-to-bumper contact. The range-topping Denali gains new standard equipment, such as surround-vision and bed view cameras, while the off-road AT4 can now be had with a set of mud tires and a high-clearance assist step. An alternative to the pricey AT4 trim level is the new X31 package that comes with many of its goodies including an off-road-tuned suspension with twin-tube Rancho dampers, skid plates, and Hill Descent Control. Another notable new option is the Denali-based Black Diamond Edition. It rolls on a set of bold 20-inch black wheels and comes with Kicker audio, an additional trailer camera, illuminated power-retractable steps, and other niceties.

Both of the 2021 Sierra 2500’s engines deliver plenty of power for confident acceleration and lugging loads. A gasoline-powered unit is standard, and it is a mighty 6.6-liter V8 good for 401 hp and 464 lb-ft of torque, bolted to a 6-speed automatic gearbox. It has serious muscle, but if hauling and towing hefty loads are going to be part of your routine, an optional Duramax diesel/Allison transmission combo can’t be beat. The 6.6-liter diesel V8 puts out 445 horsepower and a whopping 910 lb-ft of torque and works in tandem with the highly responsive 10-speed automatic. Whether it’s work or recreation, you can fully rely on your pickup truck. For it to continue offering the high level of performance and capability you’re used to, you need to make sure it is well-serviced and high-quality products are utilized for its maintenance and repairs. On our digital shelves, you’ll find top-notch 2021 GMC Sierra 2500 parts and accessories from manufacturers you know and trust, at reasonable prices.

Want to make your 2021 GMC Sierra 2500 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 2021 GMC Sierra 2500 in tip top shape, inside and out.