2021 GMC Sierra 1500

  • This field is for validation purposes and should be left unchanged.
  • Overview

    A silver 2021 GMC Sierra 1500 is angled left.

    The GMC Sierra has been a staple on American roads since its introduction in the early 1960s. As one of GMC’s best-selling trucks, the Sierra built its reputation for offering impressive power and performance without sacrificing fuel economy or luxury. That’s exactly the reputation that continues today with the new 2021 GMC Sierra 1500.

    With drivers placing even greater demands on trucks, whether working at construction sites and on ranches to weekend projects around the house, GMC has consistently delivered with the Sierra 1500. For 2021, GMC focused on the rise in trailering and towing in American culture and included a new suite of technology to give drivers more confidence behind the wheel. This innovative technology includes everything from Jack-Knife Alert to Rear Trailer View and so much more.

    The updates to the Sierra 1500s trailering suite, in addition to its many comfort and convenience features, make the GMC an even more capable workhorse. Its power and capability give drivers peace of mind whether they’re driving to work or towing a camper or boat for a fun-filled weekend at the lake. The Sierra 1500 can truly do it all!

    277 - 420

    Horsepower (HP)

    305 - 460

    Torque (lb-ft)


    Towing Capacity (lbs)

    Starting at


  • Performance

    A black 2021 GMC Sierra 1500 is driving on a dirt road.

    Engine Choices

    Aside from offering six trim options, GMC also gives drivers plenty of powertrain options that deliver a wide range of power. A 4.3-liter V6 engine paired with a 6-speed automatic transmission delivers 285 horsepower and 305 lb-ft of torque for the Sierra 1500. With this engine, the Sierra will have an estimated fuel economy of 16 MPG in the city and 21 MPG on the highway. An available 2.7-liter turbo engine paired with 8-speed automatic transmission boosts the performance of the Sierra (310 horsepower and 348 lb-ft of torque) and fuel economy ratings to 20 MPG in the city and 23 MPG on the highway.

    Need More Power?

    The two most powerful gasoline powertrains are the 5.3-liter EcoTec3 V8 and the 6.2-liter EcoTec3 V8, both of which are paired with a 10-speed automatic transmission. The 5.3-liter produces 355 horsepower and 383 lb-ft of torque. The 6.2-liter delivers the most power and torque of any powertrain in the lineup at 420 horsepower and 460 lb-ft of torque. For drivers looking for the power of a diesel engine, GMC also offers a 3.0-liter Duramax turbodiesel that produces 277 horsepower and 460 lb-ft of torque.

    Other Performance Features

    One thing that truly sets GMC’s powertrain options apart—the Dynamic Fuel Management System. This is a revolutionary system that boosts the power and efficiency of the Sierra 1500 by operating based on what the truck needs. The system automatically turns off any unnecessary cylinders to conserve power. This often occurs when cruising at highway speeds, and fuel economy sees an even bigger boost thanks to this feature.

    GMC’s 10-speed automatic transmission is also worth mentioning since it boosts the Sierra 1500’s performance. It is available on the 5.3-liter and the 6.2-liter EcoTec3 V8 engines as well as the 3.0-liter Duramax turbodiesel. Gear spacing on the electronically controlled transmission is closer and ensures the engine runs in its optimal range in all driving conditions. This is enhanced by additional features like overdrive, cruise grade braking, powertrain grade braking, and tow/haul mode, the latter of which is ideal when hauling a trailer.

  • Trims

    A red 2021 GMC Sierra 1500 is parked next to a river in the woods.

    Starting Trims

    The 2021 Sierra 1500 comes in six trim options—Sierra, SLE, Elevation, SLT, AT4, and Denali—with the Sierra starting at $30,000 and giving drivers a blank slate for customization. GMC groups the Sierra, SLE, Elevation, and SLT trims together since the models include a progressive list of standard features and available upgrades. They offer more cargo bed volume than any competitor, as well as the world’s first six-function MultiPro tailgate. Other features include the 7-in or 8-in GMC infotainment system, a rear vision camera, premium heated leather seats, and LED lighting.

    Off-Roading Trim

    For drivers looking for more off-road capability and ruggedness, GMC delivered with the AT4 trim. The AT4 boasts a distinctive exterior with black chrome accents as well as a premium interior designed to withstand the most grueling adventures. It features a 2-in suspension lift as well as the option to add mud terrain-rated Goodyear Wrangler DuraTrac tires. Drivers can also opt for the CarbonPro Edition, which features the first-ever carbon-fiber composite truck bed.

    The Luxury Edition

    The Denali is the Sierra 1500’s highest-level trim package and is, without a doubt, one of the most luxurious trucks on the market. The Denali includes the premium Bose audio system, a heated steering wheel, a wireless charging pad, USB ports, and LED cargo box lighting. It also features the 8-in infotainment system with navigation as well as an impressive 8-in Driver Information Center. Additional upgrades include Adaptive Cruise Control, a 15-in Head-Up Display, and Rear Camera Mirror.

  • Towing

    A grey 2021 GMC Sierra 1500 is towing a boat past trees.

    The biggest upgrades to the 2021 GMC Sierra 1500 are found in the model’s towing and trailering technology. This tech is designed to give drivers more confidence and peace of mind when hauling heavy loads, whether they’re towing a boat, camper, heavy horse trailer, or something else. So, what makes this technology so special?

    Trailer Hitch Guides

    One of the most difficult tasks in hauling is hooking up or hitching to a trailer. GMC takes the guesswork out of this process with the Cargo Bed View, which was modified for the 2021 models. The feature now offers a zoom view as well as Bed Hitch Guidance. This gives drivers a better view of the rear of the truck and the hitch, which makes it easier to hitch up to a trailer.

    The Rear Side View is another feature that GMC modified for 2021. This tool is helpful since it provides drivers with a split view of both the left and right sides of the truck and trailer. On 2021 models, the feature now works in reverse. This is a huge update since backing up with a trailer can be a daunting task due to limited visibility.

    Working in conjunction with the Rear Side View is the Rear Trailer View, which comes to the driver’s rescue by providing a clear view of the back of the trailer. GMC updated this feature in 2021 to include guidelines and a Trailer-Angle Indicator. For example, the guidelines are meant to help drivers back the trailer into a parking spot while the angle indicator shows the angle of the truck and trailer while parking. This helps ensure the angle of both the truck and trailer and in perfect alignment for the intended space.

    Brand New Features for 2021

    GMC added two new features to the trailering suite for 2021—the Trailer Length Indicator and the Jack-Knife Alert. When the turn signal is activated, and drivers anticipate changing lanes, the Trailer Length Indicator displays a red overlay that is twice the length of the trailer on the center console screen. This overlay is meant to show drivers if they have the needed room to switch lanes.

    The Jack-Knife Alert is an enhanced safety and trailering feature. This technology monitors the position of both the vehicle and trailer as it moves. When the front of the trailer nears the rear of the vehicle, the feature alerts the driver to the potential of jack-knifing.

Colonial Motor Mart 40.627844, -79.145080.