Starting at $47,395
6.5/10
C/D RATING
Specs
Photos
GMC
6.5/10 C/D RATING
Specs
Photos
Select a year
- Highs An absolute tow doctor, a wide offering of trailer-assist features, plush and comfy Denali Ultimate trim.
- Lows Rivals can tow more, has reached recommended daily amount of chrome, an expensive alternative to what is mostly a Chevy Silverado HD.
- Verdict Updated powertrains increase the HD's maximum towing power and a new trim level offer added lavishness, but it's still a few pounds short of more compelling rivals.
Overview
GMC Sierra HD pickups can pull a titanic amount of weight, but their Herculean efforts don't stop there. These big-power workhorses clean up pretty well, too, offering shiny chrome exterior bits and a comfortable leather saddle for the inside. The Sierra 2500HD and 3500HD are the jumbo-shrimp of their half-ton counterpart, the Sierra 1500, reviewed separately. These GMC pickups offer a higher level of luxury and finish versus Chevy's Silverado HD offerings. A 401-hp 6.6-liter V-8 with a 10-speed automatic serves as the base powertrain, while an available 470-hp Duramax turbo-diesel V-8 with 10-speed automatic transmission is a prerequisite for the Sierra HD's 22,500 pounds of maximum conventional towing. Additional trailer assist features such as Transparent Trailer View, Trailer Side Blind Zone Alert, and available adaptive cruise control with trailering make the Sierra HD work smarter instead of harder. While the heavy-duty Sierra lacks the polish and max towing of competitors such as the Ram HD and Ford Super Duty, it's a solid choice for those with a gaping truck-size hole in their heart.
Where This Vehicle Ranks
#4 in Best Heavy Duty Pickup TrucksWhat's New for 2024?
GMC's burliest pickup gets a light visual refreshing among larger changes such as a revised powertrain that offers more towing capacity and an all-new trim. The Sierra HDs get a revised front fascia with newly available LED headlights and taillights with sequential turn signals. The 6.6-liter Duramax turbocharged diesel V-8's power and torque have increased to 470 horsepower and 975 pound-feet of torque respectively. The increased power has increased the towing capacity across the Sierra 2500HD and 3500HD lineup, with a higher max rating of 22,500 pounds at the hitch. The 401-hp 6.6-liter V-8 gas engine's six-speed automatic is replaced by the Allison-certified 10-speed automatic, previously exclusive for the diesel engine. An all-new Denali Ultimate trim joins 2500HD and 3500HD and offers an even greater level of luxury than the popular Denali tier. Denali Ultimate, just as it does for Sierra 1500, adds leather-wrapped door panels, steering wheel, and A- and B-pillar handles. The 16-way power-adjustable front heated and cooled messaging front seats are also given intricate leather stitching with a topographic map of Mount Denali in Alaska. These revisions are supplemented by new trailering technology, including adaptive cruise control with trailering, gross combination weight (GCW) alert, and GM's Transparent Trailer View is now also compatible for gooseneck and fifth wheel trailering. The Sierra HD's standard driver assistance tech has also been expanded for 2024. Included in the addition of the AT4X off-road trim, there's also an AEV Edition that comes with steel bumpers, AEV 18-inch wheels, and stronger skid plates.
Pricing and Which One to Buy
The price of the 2024 GMC Sierra 2500HD / 3500 HD starts at $47,395 and goes up to $94,895 depending on the trim and options.
We'd start with the crew cab and choose the standard bed on the Sierra 2500HD. We'd steer clear of the rugged AT4 and chrome-laden Denali models despite their enhanced appearance. Instead, we'd recommend picking the SLT trim level and adding four-wheel drive and the diesel V-8. The SLT comes standard with GMC's versatile MultiPro tailgate, a heated steering wheel, heated front seats, power-adjustable front seats, and remote start. It also unlocks more options than the lesser SLE trim. We'd pick the SLT Convenience package that includes front bucket seats with ventilated cushions, heated rear seats, and a power-sliding rear window. The Driver Alert packages are also worth adding because they make the behemoth easier to live with thanks to assists such as blind-spot monitoring, lane-departure warning, and front and rear parking sensors.
Engine, Transmission, and Performance
The Sierra HD comes standard with a gas-powered 6.6-liter V-8 that generates 401 horsepower and 464 pound-feet of torque. It pairs with a 10-speed automatic transmission and rear- or four-wheel drive. The optional Duramax diesel 6.6-liter V-8 cranks out 470 ponies and 975 pound-feet of twist, and it works through an Allison-certified 10-speed automatic. You can also specify either a single- or dual-rear-wheel axle (known as a "dually") for 3500 HD models. While we've only driven an earlier diesel version, we did sample the gas-burning powertrain on the internally identical Chevy Silverado 2500HD and appreciated its dutiful behavior. However, there's no arguing that the Duramax is a highlight of the heavy-duty Sierra, and it's a no-brainer for those who regularly tow substantial loads. The engine is surprisingly refined, and the transmission is very responsive. Together they helped the 2500HD Denali we tested achieve impressively quick acceleration times. The gigantic GMC also has an agreeable ride quality for its breed. Though its steering is vague at highway speeds the Sierra nonetheless feels more agile than its heavy-duty competitors. The trail-ready AT4 and AT4X models are a more-rugged take on the commonly chrome-riddled rig, with an off-road suspension and a locking rear differential to go with its otherwise blacked-out aesthetic. The AT4X AEV adds stronger bumpers that can accept a front winch, and comes with exclusive aluminum AEV 18-inch wheels.
Towing and Payload Capacity
The strongest Sierra 3500HD can pull as much as 36,000 pounds. However, those massive capacities require the diesel engine, regular cab, rear-wheel drive, the dual-rear-wheel axle, and a gooseneck hitch. The same truck with a fifth-wheel hitch drops the capacity to 32,000 pounds. The Sierra 2500HD is only offered with a single-rear-wheel axle, and its burliest version is good for 22,500 pounds of towing.
Fuel Economy and Real-World MPG
Since the EPA doesn't test vehicles as heavy as the Sierra HD and its gigantic competitors, we can only judge their real-world mpg on our highway fuel-economy route. We've only tested a Sierra 2500HD Denali with the diesel engine, which earned 17 mpg on the highway. For comparison, the diesel-powered Silverado 2500 LTZ crew cab and Ram 2500 Tradesmen regular cab diesels we tested both managed 19 mpg. Those who stick with the GMC's standard gas-fed V-8 should expect to see even worse fuel economy than the diesel option.
Interior, Comfort, and Cargo
Inside, the Sierra 2500HD and 3500HD have a huge dashboard that hosts user-friendly switchgear. Most models have a split-folding front bench that can be replaced with a pair of bucket seats and a full center console. The Sierra's interior can also be optioned with a head-up display, a heated steering wheel, heated-and-cooled front seats, and wireless charging. Unfortunately, the cabin's panel fits and material quality are mediocre at best. While there's an abundance of soft touch surfaces throughout, and most models benefit from durable plastics, the top-of-the-line Denali falls woefully short of its luxury billing. The new Denali Ultimate trim is as grandeur as it gets, with leather-wrapped interior pieces, Paldao wood trim pieces, and a soft microsuede headliner. The fanciest alternatives from Ram overshadow the GMC largely thanks to their significantly more upscale look and feel. Still, the Sierra HD will please pickup-truck buyers who prioritize practicality and versatility. Along with extensive passenger space in the crew cab, the GMC is littered with handy interior cubby storage. Its standard and long cargo boxes have built-in steps on both sides of the bed and the rear bumper has them at each corner. The box can be further customized with LED lighting, movable tie-downs, and a 120-volt outlet. The heavy-duty Sierra's biggest showpiece is its innovative multi-function tailgate, which has six different positions that include a work surface and bench. It's a tailgater's dream come true.
View Photos
Infotainment and Connectivity
Every Sierra HD has a standard touchscreen infotainment system with Apple CarPlay and Android Auto. While base models have fewer options, they can still be outfitted with a 120-volt outlet and a mobile hotspot. Most trim levels have an 8.0-inch screen and additional charging ports. All systems include a set of rotary knobs and physical buttons that are easily accessible. The larger touchscreen can be upgraded with built-in navigation, a Bose audio system, SiriusXM satellite radio, and a rear-seat entertainment system. A massive 13.4-inch infotainment touchscreen offers the most integrated experience with features like Google Built-in, split-scren navigation, and is wireless Apple CarPlay and Android Auto compatible. This display is standard on Denali and Denali Ultimate trims. GMC also offers a smartphone app that can be used to remotely control trailer functions. Likewise, the truck's infotainment system allows users to store different trailer profiles to monitor maintenance.
Safety and Driver-Assistance Features
While the truck can be equipped with various driver-assistance technology, only a portion of them come standard, and heavy-duty rivals offer even more assists. However, the GMC does have a comprehensive camera system that features up to 15 different viewing modes, including a "transparent" mode that allows the user to virtually see through an attached trailer as if it wasn't there. For more information about the Sierra HD's crash-test results, visit the National Highway Traffic Safety Administration (NHTSA) and Insurance Institute for Highway Safety (IIHS) websites. Key safety features include:
- Standard forward-collision warning and automated emergency braking
- Standard lane-departure warning
- Available blind-spot monitoring and rear cross-traffic alert
Warranty and Maintenance Coverage
GMC provides a competitive warranty plan that matches the coverage provided by its Ford and Ram rivals but, unlike those alternatives, it does include one complimentary scheduled maintenance visit.
- Limited warranty covers three years or 36,000 miles
- Powertrain warranty covers five years or 60,000 miles
- Complimentary maintenance is covered for the first year
Specifications
Specifications
2024 GMC Sierra 2500HD AT4X AEV
Vehicle Type: front-engine, rear/4-wheel-drive, 5-passenger, 4-door pickup
PRICE
Base: AT4X AEV, $94,290; AT4X AEV diesel, $103,680
ENGINES
pushrod 16-valve 6.6-liter V-8, 401 hp, 464 lb-ft; turbocharged and intercooled pushrod 32-valve 6.6-liter diesel V-8, 470 hp, 975 lb-ft
TRANSMISSION
10-speed automatic
DIMENSIONS
Wheelbase: 159.1 in
Length: 250.7–252.0 in
Width: 81.9 in
Height: 82.7 in
Passenger Volume, F/R: 73/66 ft3
Curb Weight (C/D est): 7900–8650 lb
PERFORMANCE (C/D EST)
60 mph: 6.6–7.3 sec
1/4-Mile: 15.1–15.8 sec
Top Speed: 98 mph
More Features and Specs
Shopping Tools
What's My Car Worth?
Car and Driver values are calculated from the same Black Book® data dealers use to appraise vehicles.
Get Estimate
Insurance Marketplace
See what you can save on car insurance.
Learn More
Auto Loans & Financing
Our finance experts answer any questions you may have about financing a vehicle.
Learn More
Similar Vehicles
2024 Ram HD
9
/10
C/D RATING
Starting at
$47,245
EPA MPG
N/A
C/D SAYS: Despite its outdated diesel transmission, the Ram HD’s combination of towing capability and interior comfort make it a trucker’s dual-purpose tool. Learn More
Ram Ram HD Model Years
- View 2024 Ram HD DetailsStarting at $47,245 · 9/10
- View 2023 Ram HD DetailsStarting at $48,710 · 9/10
2024 Ford Super Duty
8.5
/10
C/D RATING
Starting at
$46,965
EPA MPG
N/A
C/D SAYS: The 2024 Ford Super Duty is one of the most versatile heavy-duty trucks, with commercial-grade capability and the ability to conquer most other tasks. Learn More
Ford Ford Super Duty Model Years
- View 2024 Ford Super Duty DetailsStarting at $46,965 · 8.5/10
- View 2023 Ford Super Duty DetailsStarting at $45,965 · 8.5/10
2025 Chevrolet Silverado HD
7
/10
C/D RATING
Starting at
$47,000 est
EPA MPG
N/A
C/D SAYS: Like a ten-pound hammer, the Chevy Silverado HD has the muscle to get big jobs done; but unlike that hammer, the truck also seats six and has an available diesel. Learn More
Chevrolet Chevrolet Silverado HD Model Years
- View 2025 Chevrolet Silverado HD DetailsStarting at $47,000 est · 7/10
- View 2024 Chevrolet Silverado HD DetailsStarting at $46,395 · 7/10
2024 Nissan Titan XD
4.5
/10
C/D RATING
Starting at
$54,860
EPA MPG
N/A
C/D SAYS: The 2024 Nissan Titan rides better than heavy-duty trucks but is less capable than some half-ton models, so it draws little interest in no-man's land. Learn More
Nissan Nissan Titan XD Model Years
- View 2024 Nissan Titan XD DetailsStarting at $54,860 · 4.5/10
- View 2023 Nissan Titan XD DetailsStarting at $49,885 · 4.5/10
Advertisem*nt - Continue Reading Below
More From GMC
2024 GMC Hummer EV SUV
8
/10
C/D RATING
Starting at
$79,995
EPA Est. Range
N/A
C/D SAYS: The all-electric GMC Hummer EV SUV will have a smaller impact on carbon emissions than its infamous gas-powered predecessors, and a big impact on EVs. Learn More
2024 GMC Canyon
9
/10
C/D RATING
Starting at
$37,595
EPA MPG
17–20 combined
C/D SAYS: The 2024 GMC Canyon lineup gains an even wilder off-road AT4X AEV Edition trim that makes good on its small package-big power promise. Learn More
GMC GMC Canyon Model Years
- View 2024 GMC Canyon DetailsStarting at $37,595 · 9/10
- View 2023 GMC Canyon DetailsStarting at $38,395 · 9/10
- View 2022 GMC Canyon DetailsStarting at $30,480 · 7/10
- View 2021 GMC Canyon DetailsStarting at $27,995 · 8/10
- View 2020 GMC Canyon DetailsStarting at $23,395 · 8/10
- View 2019 GMC Canyon DetailsStarting at $23,295 · 9/10
- View 2018 GMC Canyon DetailsStarting at N/A · 9/10
- View 2017 GMC Canyon DetailsStarting at N/A · 9/10
2024 GMC Terrain
6
/10
C/D RATING
Starting at
$30,095
EPA MPG
25–26 combined
C/D SAYS: Despite a roomy cabin, a modern look, and decent standard tech, the 2024 GMC Terrain's middling build quality and subpar materials hold it back from competitors. Learn More
GMC GMC Terrain Model Years
- View 2024 GMC Terrain DetailsStarting at $30,095 · 6/10
- View 2023 GMC Terrain DetailsStarting at $31,295 · 6/10
- View 2022 GMC Terrain DetailsStarting at $31,295 · 6/10
- View 2021 GMC Terrain DetailsStarting at $26,195 · 7/10
- View 2020 GMC Terrain DetailsStarting at $26,195 · 7/10
- View 2019 GMC Terrain DetailsStarting at $26,195 · 7/10
- View 2018 GMC Terrain DetailsStarting at N/A · 7/10
- View 2017 GMC Terrain DetailsStarting at N/A · 4/10
2024 GMC Hummer EV Pickup
8
/10
C/D RATING
Starting at
$98,845
EPA Est. Range
314 miles
C/D SAYS: With heart-racing acceleration and humongous proportions, the 2024 GMC Hummer EV pickup truck will astound some people and offend others. Learn More
GMC GMC Hummer EV Pickup Model Years
- View 2024 GMC Hummer EV Pickup DetailsStarting at $98,845 · 8/10
- View 2023 GMC Hummer EV Pickup DetailsStarting at $87,000 est · 8/10
- View 2022 GMC Hummer EV Pickup DetailsStarting at $86,645 · 8/10
2024 GMC Yukon
8.5
/10
C/D RATING
Starting at
$60,195
EPA MPG
16–17 combined
C/D SAYS: The 2024 GMC Yukon and Yukon XL comfortably seat up to eight passengers and they also have the capability to tow the party boat close behind. Learn More
GMC GMC Yukon Model Years
- View 2024 GMC Yukon DetailsStarting at $60,195 · 8.5/10
- View 2023 GMC Yukon DetailsStarting at $59,295 · 8.5/10
- View 2022 GMC Yukon DetailsStarting at $57,245 · 8.5/10
- View 2021 GMC Yukon DetailsStarting at $52,595 · 8.5/10
- View 2020 GMC Yukon DetailsStarting at $51,895 · 8/10
- View 2019 GMC Yukon DetailsStarting at $50,895 · 8/10
- View 2018 GMC Yukon DetailsStarting at N/A · 7/10
- View 2017 GMC Yukon DetailsStarting at N/A · 7/10
2024 GMC Sierra EV
Starting at
$99,495
EPA Est. Range
N/A
C/D SAYS: GMC enters the electric-truck ring with the Sierra EV pickup, which will launch for 2024 with the 754-hp, nearly $100,000 Denali Edition 1 model. Learn More
2024 GMC Acadia
Starting at
$43,995
EPA MPG
N/A
C/D SAYS: A fresh chassis shakes things up, in a good way, for the next-gen 2024 GMC Acadia, which has 328 horsepower, available all-wheel drive, and three rows of seats. Learn More
GMC GMC Acadia Model Years
- View 2024 GMC Acadia DetailsStarting at $43,995
- View 2023 GMC Acadia DetailsStarting at $38,195 · 5.5/10
- View 2022 GMC Acadia DetailsStarting at $36,145 · 5.5/10
- View 2021 GMC Acadia DetailsStarting at $30,995 · 5.5/10
- View 2020 GMC Acadia DetailsStarting at $30,995 · 5.5/10
- View 2019 GMC Acadia DetailsStarting at $30,195 · 7/10
- View 2018 GMC Acadia DetailsStarting at $29,995 · 7/10
- View 2017 GMC Acadia DetailsStarting at N/A · 7/10
2024 GMC Savana
6.5
/10
C/D RATING
Starting at
$42,595
EPA MPG
N/A
C/D SAYS: A time-tested apparatus for hauling tools, packages, and people, the GMC Savana van is the segment’s towing champ and longest running model. Learn More
GMC GMC Savana Model Years
- View 2024 GMC Savana DetailsStarting at $42,595 · 6.5/10
- View 2023 GMC Savana DetailsStarting at $39,895 · 6.5/10
- View 2022 GMC Savana DetailsStarting at $34,695 · 6.5/10
- View 2021 GMC Savana DetailsStarting at $34,295 · 6.5/10
- View 2020 GMC Savana DetailsStarting at $33,795 · 6.5/10
- View 2019 GMC Savana DetailsStarting at $33,095 · 6/10
- View 2018 GMC Savana DetailsStarting at $32,490 · 6/10
- View 2017 GMC Savana DetailsStarting at N/A · 6/10
2024 GMC Sierra 1500
8.5
/10
C/D RATING
Starting at
$38,345
EPA MPG
16–22 combined
C/D SAYS: The 2024 GMC Sierra 1500 looks as sharp as a drywall knife, with enough powertrain and cab configurations to finish the rest of the house after the mud dries. Learn More
GMC GMC Sierra 1500 Model Years
- View 2024 GMC Sierra 1500 DetailsStarting at $38,345 · 8.5/10
- View 2023 GMC Sierra 1500 DetailsStarting at $37,445 · 8.5/10
- View 2022 GMC Sierra 1500 DetailsStarting at $35,645 · 8.5/10
- View 2021 GMC Sierra 1500 DetailsStarting at $29,795 · 8.5/10
- View 2020 GMC Sierra 1500 DetailsStarting at $29,195 · 8.5/10
- View 2019 GMC Sierra 1500 DetailsStarting at $29,195 · 8/10
- View 2018 GMC Sierra 1500 DetailsStarting at $30,495 · 9/10
- View 2017 GMC Sierra 1500 DetailsStarting at $29,700 · 9/10