
Since its launch just over 60 years ago, the GMC Sierra pickup truck has been a beacon of performance, reliability, and excellence in the automotive world. Drivers have been able to count on the Sierra for decades with its bold look, comfortable ride, and the toughness to go anywhere they want. So, in 2021, GMC has repaid pickup fans’ faith yet again. The brand new 2021 GMC Sierra has the capability folks have come to expect and the sophistication and style that they demand. It’s a steel fist in a very comfortable velvet glove, and once you climb inside, you won’t ever want to drive anything else.
Is the GMC Sierra Better than the Chevy Silverado?
The GMC Sierra vs. Chevy Silverado debate has gone on for as long as these trucks have been produced. That’s because they share so much of the same technology, styling cues and features. Many times, for truck buyers, it comes down to dogged brand loyalty or just a slight preference. But, if you consult the experts, the 2021 Sierra wins out in a couple of key categories. The folks at U.S. News say that both the 2021 Chevy Silverado and the GMC Sierra share a lot of the same very good qualities… but that the Sierra 1500 offers a better ride quality compared to the Silverado. Plus, the team from Car and Driver notes the Sierra has more precise steering and less body roll than other trucks. Compared to the Silverado, the Sierra offers some exclusive features like adaptive dampers and a carbon fiber cargo box. Then there’s the look of the GMC: bolder than the Silverado, with those C-shaped lighting elements, LED headlights, and a massive front grille that separates it from the Silverado’s double-stacked design. Finally – and most importantly to everyone’s bank accounts – the Sierra is more affordable by thousands of dollars (with the same level of engine, features, and technology).
What’s New for the 2021 GMC Sierra?
For the new 2021 Sierra, GMC has trained their focus on giving their flagship truck some outstanding new or enhanced trailer-assistance features. GMC knows that truck owners love nothing more than using their vehicle to bring the party with them – but savvy buyers demand safety. So, GMC added a jack-knife alert that gives drivers the heads up in the event of this braking disaster. There is also a new trailer-length safety indicator that lets the driver know when nearby traffic might interfere with the trailer connected behind. Additionally, in 2021, GMC gave the people more of what they love – the Sierra’s Multipro tailgate is now available in more models and trims. Plus, there are more paint color options, and the high-performance, off-road AT4 model adds new Goodyear Wrangler Territory tires and a high-clearance step. For those of us that demand the tried and true performance of the Duramax – while also searching out a deal – the optional diesel engine also gets a $1,500 discount from last year’s truck. There are a handful of new driving modes added for 2021, as well, to aid and enhance the driving experience. The settings include Tour (which is the default), Sport, Tow/Haul, and Off-Road, with each altering throttle response, transmission shift points, steering effort, and stability-control programming.
2021 GMC Sierra Trim Levels
The 2021 Sierra comes in three general trim groups, all of which boast an impressive set of aggressive styling, cutting edge technology, and groundbreaking safety features.
First is the Sierra SLE, Elevation and SLT, which start at $30,000 for the base models. But, even the base models aren’t basic. They tow up to 11,800 lbs. while still getting 20/23 mpg, and you’ll never forget you’re in a luxury vehicle. The GMC Sierra has the exclusive details and quality materials that add to your premium driving experience, including best-in-class Crew Cab front head and leg room (max).
2021 GMC Sierra SLE, Elevation, and SLT
SLE, Elevation and SLT Key Features:
- More cargo bed volume than any competitor
- LED headlamps with unique C-shape lighting
- Premium heated, leather-appointed front outboard seating on SLT
- Available World’s First Six-Function MultiPro Tailgate
- Available 3.0L Duramax® Turbo-Diesel engine with 10-speed automatic transmission
- Available ProGrade™ Trailering System with in-vehicle Trailering App
- Available class-leading up to 15 Camera Views on SLT
2021 GMC Sierra AT4
The 2021 Sierra AT4 is the high-performance, off-road beast of the bunch. This monster – albeit a comfortable, sophisticated monster – has 420 horsepower and 460 lb.-ft. of torque and looks like it’s ready to rumble with exclusive exterior appearances including black chrome grille surround, badging and black dual exhaust tips. The AT4 starts at $54,300 and gets 16/21 mpg.
Sierra AT4 Key Features:
- 2-inch factory-installed suspension lift
- World’s First Six-Function MultiPro Tailgate
- Exclusive athletic, premium interior
- Available mud terrain-rated Goodyear Wrangler DuraTrac® tires
- Available class-leading up to 15 Camera Views
- Available 3.0L Duramax® Turbo-Diesel engine with 10-speed automatic transmission or available 6.2L V8 Engine
- Available CarbonProTM Edition with industry-first carbon-fiber composite bed
2021 GMC Sierra Denali
The 2021 Sierra Denali carries on the legacy of its predecessors as GMC’s highest grade of performance and luxury. Starting at $55,600, the Denali delivers a sophisticated driving experience with appealing technology and handcrafted materials that include authentic open-pore ash wood, brushed aluminum trim, and forged perforated leather seating surfaces.
Sierra Denali Key Features:
- World’s First Six-Function MultiPro Tailgate
- Segment Exclusive Standard Continuous Damping Adaptive Ride Control
- Available first-in-class 15″ diagonal Head-Up Display and Rear Camera Mirror
- Available class-leading up to 15 Camera Views
- Available Adaptive Cruise Control
- Available 3.0L Duramax® Turbo-Diesel engine with 10-speed automatic transmission or available 6.2L V8 Engine
- Available CarbonProTM Edition with industry-first carbon-fiber composite bed
When Does the 2021 GMC Sierra Go on Sale?
This is the very best bit of news you’ll read in this entire article – the 2021 GMC Sierra is on sale now!


