2021 GMC Diesel Trucks for Sale in Duluth, GA

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  • Overview

    A black 2021 GMC Diesel truck, a Sierra 3500HD, is angled left.

    GMC is one of the most popular automobile manufacturers in the country. Since its founding in 1911, GMC has built an impressive history and reputation for putting the most reliable and high-performing vehicles on the road. That continues today with the latest lineup of 2021 GMC diesel trucks that include the Canyon, Sierra 1500, and the Sierra Heavy Duty.

    GMC has a rich history of offering the best diesel engines, especially since designing the legendary Duramax diesel engine in the late 1990s to modernize diesel technology and offer only the best of the best under the hood. That powerful and fuel-efficient diesel engine set GMC apart from other leading truck manufacturers. It's also why there's so much praise for GMC's light and heavy-duty diesel engines. For example, the light-duty 3.0-liter Duramax turbodiesel found in the 2021 Sierra 1500 delivers 460 lb-ft of torque while the beefier 6.6-liter Duramax turbodiesel V8 from the 2021 Sierra HD delivers a jaw-dropping 910 lb-ft of torque.

    GMC's commitment to excellence not only delivers great power - it also delivers great capability and performance. By modernizing diesel technology, GMC extended the capability of its diesel trucks and provided more torque and more horsepower. This transforms the already impressive lineup of GMC diesel trucks into high-performing workhorses that excel whether they're putting down highway miles or hauling heavy loads. Add in the fact that GMC is also dedicated to offering the utmost in comfort and luxury on its trucks, and it's easy to see why the 2021 GMC diesel truck lineup is the most popular on the road today!


    Max Towing Capacity (lbs)


    Horsepower (hp)


    Torque (lb-ft)

    Starting at

    Starting at $39,325*

  • Luxury

    A gray 2021 GMC Sierra Denali is parked in front of an ocean.

    Along with offering outstanding performance in its 2021 lineup of diesel trucks, GMC also offers a wide range of luxury features. The Canyon, Sierra 1500, and Sierra Heavy Duty all come with several different trim options, but the utmost in luxury is the Denali package. The Denali package offers every amenity and comfort available to transform GMC's already comfortable trucks into the epitome of luxury and class.

    Denali Half-Ton

    The Denali trim package on the 2021 Sierra 1500 includes a variety of sophisticated accents beginning with the Premium Forge perforated leather seating and the authentic open-pore ash wood interior trim. The Denali logo is embroidered on the premium leather headrests, and real aluminum trim accentuates the interior cabin. Drivers also enjoy 10-way power-adjustable seats that offer lumbar support and are both heated and ventilated. This is a truck that will treat you as well as any luxury SUV or sedan.

    Denali Heavy-Duty

    The 2021 Sierra Heavy Duty also offers the Denali trim package and many of the same luxury features as the Sierra 1500. The Heavy Duty Denali includes a leather-wrapped and heated steering wheel and premium leather seats that are heated and ventilated. The interior also boasts dual-zone climate control with rear-seat vents that support the advanced HVAC system and ensure the cabin is always the ideal temperature.

    A few components truly set the Sierra HD Denali apart from the other models. The Denali features an elevated driver's seat with premium cushions that enhance the driver's visibility and comfort. Passengers in the backseat also benefit since the HD Denali includes heated rear outboard seats as well as extra legroom that adds to the already spacious interior. This full-size truck brings simply unmatched comfort as well as incredible capability.

  • Tech

    The gray interior and dashboard of a 2021 GMC Sierra Elevation is shown.

    By offering the latest in technology, GMC ensures that drivers who get behind the wheel of a 2021 GMC diesel truck will have all the confidence in the truck's ability to keep them connected whether they're traveling down the highway or venturing off the road on their next big adventure. To do this, all GMC truck models offer an 8-inch diagonal touchscreen that houses the GMC infotainment system. The touchscreen serves as the hub of connectivity and gives drivers access to their smartphone media as well as navigation.

    Modern Connectivity

    Connectivity is another key tech feature of the GMC diesel trucks and starts with a 4G LTE WiFi hotspot that ensures drivers can stay connected wherever their adventures take them. The trucks also feature power and USB outlets to keep devices like smartphones and tablets charged, as well as an available wireless smartphone charging station that eliminates the need for cords, thanks to the innovative charging mat. But that's only the beginning of connectivity for GMC!

    GMC takes its tech features to the next level by offering a built-in Alexa that gives drivers hands-free access to their navigation, weather and news apps, calls, music, and more. The trucks also offer Apple CarPlay with Waze availability and Android Auto compatibility. Last but certainly not least is the myGMC mobile app that gives drivers even more control over the vehicle. Just download the app to your phone, and you're ready to go.

    myGMC Benefits

    Through the app, drivers can schedule service and manage maintenance for the truck in addition to setting smart parking reminders. The app's GMC Smart Driver feature even gives drivers tips to improve their driving to earn discounts on their automotive insurance. With the Remote Access Plan, drivers can use the app to remotely start and stop the car as well as lock and unlock the doors, start the heater, or sound the horn - perfect for getting your car ready in cold weather or just finding it in a crowded parking lot. This option also gives drivers intel on fuel economy, tire pressure, and oil life.

  • 2021 Lineup

    A red 2021 GMC Canyon SLT diesel is shown parked in front of trees.

    The 2021 GMC diesel lineup starts with the midsize Canyon. This truck offers a 2.8L Duramax diesel engine on the Elevation, AT4, and Denali trims, starting at $39,325. This engine delivers 181 hp and 369 lb-ft of torque, allowing the Canyon to tow up to 7,700 lbs. However, the diesel is good for more than just towing. Combine it with the Canyon AT4 trim with its four-wheel-drive, automatic locking rear differential, and an off-road suspension package, and you will have the perfect-truck for off-road adventures. Put it in the top-tier Canyon Denali, and you will have premium luxury and incredible efficiency, making an ideal truck for long road trips.

    Light-Duty Diesel

    Next in the diesel lineup is the Sierra 1500, which can be equipped with a diesel engine on all but the base trim. The 2021 Sierra 1500 SLE with the 3.0L Duramax diesel engine starts at $44,470. With this engine, you will enjoy 277 hp and 460 lb-ft of torque, which allows the Sierra 1500 to tow up to 9,100 lbs. The Duramax is also extremely efficient and is rated for up to 30 MPG in highway driving. The Sierra AT4 diesel, which starts at $53,890, is noticeably different from other Sierra 1500 trims thanks to its 2-inch suspension lift. The final trim option is the Denali, which starts at $57,885 with the Duramax engine.

    Heavy-Duty Diesel

    The 2021 Sierra HD is the last in the lineup and features the same trim options as the 2021 Sierra 1500. However, unlike the Sierra 1500, the Sierra HD offers the upgrade to its 6.6L Duramax diesel engine on every trim. This means that the starting price for a 2021 Sierra HD diesel truck is just $49,510 for the base trim. With its 277 hp and 420 lb-ft of torque, the Sierra HD diesel offers best-in-class towing of 36,000 lbs, as well as best-in-class cargo bed volume of 83.5 cubic feet. These features are only enhanced by the durable Allison ten-speed transmission, which allows you to remain in the engine's power band no matter the task at hand.

Hendrick Vehicle Disclaimer:
$849.00 Dealer Administrative Charge included in advertised price. Advertised prices EXCLUDE options added by the dealer and displayed on the vehicle’s window sticker addendum. Please contact dealer for additional details. All prices exclude all taxes, tag, title, registration fees and government fees. Out of state buyers are responsible for all taxes and government fees and title/registration fees in the state where the vehicle will be registered. All prices include all manufacturer to dealer incentives, which the dealer retains unless otherwise specifically provided. Dealer not responsible for errors and omissions; all offers subject to change without notice; please confirm listings with dealer. All vehicles may not be physically located at this dealership but may be available for delivery through this location. Transportation charges may apply. Please contact the dealership for more specific information. All vehicles are subject to prior sale.

Current Vehicle Disclaimers:

*Not all vehicles will qualify for maximum discount. Must finance with GM Financial. Not compatible with special finance, lease and some other offers. Stock number vary in discount. Prices do not include tax, title, license and Dealer Installed Options. See the team at Rick Hendrick Buick/GMC Duluth for details and availability. *Not all vehicles will qualify for maximum discount. Must finance with GM Financial. Not compatible with special finance, lease and some other offers. Stock number vary in discount. Prices do not include tax, title, license and Dealer Installed Options. See the team at Rick Hendrick Buick/GMC Duluth for details and availability.

*Well-qualified customers who purchase a new, used, or certified preowned vehicle, 5 model years or newer with less than 72K miles between August 26, 2022 and September 30, 2022 and finance through a participating dealer and Ally have an option to defer monthly payments for 120 days from contract date. Finance charges begin to accrue on the date you sign the Retail Installment Sale Contract at the Annual Percentage Rate (APR) disclosed in the contract. May not be combined with other Ally financing offers. 72 months maximum term limit. Non-commercial transactions only. Equal monthly payments only. Dealer participation required. Not available to Pennsylvania residents, see your dealer for details. Must take retail delivery by September 30, 2022.

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Rick Hendrick Buick GMC 33.96028, -84.11863.