The mid-generation freshening we expected for 2023 has arrived with the 2024 GMC Sierra HD. Consequently, what already was a very capable pickup can now tow even more than last year’s 2500 HD model. As before, the GMC Sierra 2500 and 3500 HD models compete with other segment workhorses like the Ram HD, Ford Super Duty, and its GM corporate cousin, the Chevy Silverado HD.
The natural first question for an HD truck is: How much can it haul and tow? A lot, actually. GMC boosted the maximum towing capacity for the 2500 HD by 4,000 pounds to 22,500 pounds (21,900 pounds for Crew Cab versions). Some of that extra capability is delivered by the new 10-speed automatic transmission supplanting last year’s 6-speed on gas V8 models.
The max tow capacity of the GMC Sierra 3500 HD remains a stump-pulling 36,000 pounds when armed with the diesel engine and dual wheels on each side of the rear axle. If you own a landscaping, construction or or other small business, the Sierra 3500 should be on your work truck short list.
Also slightly increased is the 2500 HD’s payload (combined weight of cargo and passengers) capacity at 3,759 pounds with the gas V8 and 3,850 pounds with the diesel. For the 3500 HD, the maximum hauling capacity with the single-wheel rear axle is 4,590 pounds, while the dual-wheel rear axle delivers up to 7,290 pounds.
There are far too many cab and bed lengths, engines, drive wheels, and trim choices to price out every possible combination here. Although capability and price vary between 2500 HD and 3500 HD models, their trim levels are the same.
The 2024 GMC Sierra HD trucks are big-job solutions. They are larger and less fuel efficient than the Sierra 1500. If you don’t require extra hauling and towing power, we suggest sticking with the 1500. But if you have the need, you have the need.
Two Powerful Engines
Except for the AT4, Denali, and Denali Ultimate, all Sierra HD trims come standard with rear-wheel drive (RWD). However, you can add 4-wheel-drive (4WD) as an option. Likewise, you can add the dual-wheel axle (dually) option on most 3500 HD trims.
GMC provides a 401-horsepower 6.6-liter V8 mated to a 10-speed automatic as the standard engine. It produces 464 lb-ft of torque. For maximum hauling power, GMC makes available a 470-hp 6.6-liter Duramax V8 turbodiesel (standard in Denali Ultimate). Also mated to a 10-speed automatic transmission, its maximum torque is an earth-moving 975 lb-ft. These numbers reflect a 25-hp gain and a boost in torque of 65 lb-ft.
The EPA doesn’t provide fuel economy figures for HD trucks.
2024 GMC Sierra HD: What’s New?
Leading off the many 2024 changes is the addition of a new Denali Ultimate grade. You will also discover new interiors for the SLE, SLT, AT4, Denali, and Denali Ultimate trims. Rain-sensing wipers are now standard, beginning with the SLT trim. A 13.4-inch infotainment touchscreen is included with all but the base Pro trim. Likewise, a 12.3-inch digital color driver-information display is standard, except for the base Pro trim. There are a few exterior cosmetic enhancements, as well.
GMC has made its Sierra HD Pro Safety package standard for every grade. Its advanced driver-assist technologies include automatic forward emergency braking with pedestrian detection and forward collision warning. Also included are high-beam assist and lane-departure warning.
2024 GMC Sierra 2500 HD Pro: $44,400; GMC Sierra 3500 HD Pro: $45,600
The listed prices are for the 2024 GMC Sierra HD Pro Regular Cab with the long box (98.27 inches) and RWD. You can also get it with a Double Cab ($2,100) or a Crew Cab ($3,700).
There are not a lot of frills on the basic Pro work truck. Riding on 17-inch silver-painted steel wheels, its standard features include LED exterior lights (taillights, headlights, and daytime running lights). It also has a 3.5-inch driver-information display, power door locks, vinyl seating and flooring, and a tilt-only urethane steering wheel. The 40/20/40-split bench seat features manual adjustments.
Also included are a capless fuel filler, 12 cargo tie-downs, an integrated bed step, and Teen Driver, which uses the key fob to set specific parameters for younger drivers. Power windows, manual outboard mirrors, a locking tailgate, a trailer hitch, an auto-locking rear differential, and the HD Pro Safety technologies are included, too. Remote keyless entry, push-button start, and air conditioning also are standard.
A 7-inch touchscreen commands the infotainment system, which provides a 2-speaker (6-speaker in Double and Crew Cab models) audio system, Wi-Fi hot spot capability, and Bluetooth connectivity. Two USB ports and OnStar, Apple CarPlay, and Android Auto capability are onboard as well.
There are plenty of options and option packages. The Pro Safety Plus Package adds features like an auto-dimming rearview mirror and heated power-adjustable outboard trailering mirrors with integrated turn signals.
The Convenience Package gains deep-tinted glass, a rear-window defogger, an EZ Lift tailgate with a power lock, and more.
Adding the $1,895 destination fee to the Sierra 2500 HD Pro base price brings the total to $46,295. Financing for 60 months at 5% interest with $0 down works out to $874 per month. See 2024 GMC Sierra HD Pro models for sale near you
2024 GMC Sierra HD Pro includes:
Pro Safety Plus Package – A bundle of advanced safety technologies, it includes forward collision warning, automatic emergency braking with front pedestrian detection, lane-departure warning, and high-beam assist.
LED exterior lighting – This includes headlights, taillights, and daytime running lights. LEDs illuminate a wider and longer area than regular incandescent or halogen lights, which means they are also easier for other drivers to see.
Remote keyless entry – You can unlock and lock the Sierra HD using the fob.
2024 GMC Sierra 2500 HD SLE: $49,200; GMC Sierra 3500 HD SLE: $50,400
The listed price is for the Regular Cab Sierra HD SLE with the long box and RWD. Double Cab and Crew Cab models also are available.
Moving up to the SLE brings several enhancements, for example, cloth seating, the upgraded infotainment system with the 13.4-inch touchscreen, satellite-radio capability, and voice recognition. Other standard features are a 12.3-inch digital driver-information display, heated power outboard mirrors with integrated turn signals, carpeting, and keyless entry. The MultiPro tailgate also comes equipped on this truck, along with EZ Lift and 17-inch aluminum wheels, cruise control, and an integrated trailer brake controller.
Need more? Check the Preferred Package and gain adaptive cruise control, a hitch-view camera, cargo bed LED lighting, a universal home remote, and the In-Vehicle Trailering App.
The SLE Convenience Package ($1,140) adds a 10-way power-adjustable driver seat, dual-zone automatic climate control, LED fog lamps, and more.
Adding the $1,895 destination fee to the Sierra 2500 HD SLE base price totals $51,095. Financing at 5% interest for 60 months with $0 down works out to a monthly payment of $964. See 2024 GMC Sierra HD SLE models for sale near you
2024 GMC Sierra HD SLE includes:
Proximity keyless entry – If the key fob is on your person, the doors automatically unlock when you approach the vehicle or touch the door handle.
MultiPro tailgate – Providing several functions, this versatile tailgate makes loading easy and even offers a seat with a footrest for tailgating.
13.4-inch touchscreen – Serving as the command center for the infotainment system, this large display is easy to read and use.
2024 GMC Sierra 2500 HD SLT: $58,700; GMC Sierra 3500 HD SLT: $61,700
The listed prices are for the Sierra HD SLT Double Cab with the standard box (82.25 inches) and RWD. If you want the Crew Cab, it will set you back another $1,800.
Many of the upgrades from the option packages of the lower trims improve life with the SLT. For instance, it adds heated 10-way power-adjustable front seats, dual-zone automatic climate control, and an auto-dimming rearview mirror. Driver-seat preset memory, LED fog lights, and second-row under-seat storage (Crew Cab only) are also installed.
Other enhancements are power-folding outboard mirrors, 18-inch aluminum wheels, a rear-window defogger, a remote engine start, more USB ports, and a tilt-and-telescopic steering wheel. Rain-sensing wipers, the ProGrade Trailering System, and a theft-deterrent system are also included.
Adding more features is easy. Consider the SLT Premium Package, which has a power-sliding rear window, front bucket seats with a center console, a spray-on bedliner, tubular chrome assist steps, and more. The contents of Sierra HD Pro Safety Plus and the SLT Convenience and SLT Preferred packages are also included.
Adding the destination fee to the Sierra 2500 HD SLT base price equals $60,595. Financing at 5% interest for 60 months with $0 down, the monthly payment works out to $1,144. See 2024 GMC Sierra HD SLT models for sale near you
2024 GMC Sierra HD SLT includes:
Dual-zone automatic climate control – A set-and-forget system divides the vehicle into left and right regions, providing separate temperature settings for each zone. Once set, it automatically maintains the preset temperatures.
Rain-sensing wipers – When the system senses moisture on the windshield, it automatically engages the wipers. The wiper speed adjusts according to the volume of the rain.
ProGrade Trailering System – A combination of the guidance hitch-view camera and In-Vehicle Trailering App, this feature aids you in hooking up your trailer and keeping track of its maintenance.
2024 GMC Sierra 2500 HD AT4: $69,100; GMC Sierra 3500 HD AT4: $70,300
The listed prices are for the AT4 Crew Cab with the standard box and 4WD.
Although you can add 4WD to the lower trims, the AT4 is the first model focused on off-roading. It features an off-road suspension, Autotrac 2-speed transfer case, skid plates, hill-descent control, red recovery hooks, and twin-tube Rancho shocks. All-terrain tires are part of the package, too.
Also standard is front bucket seats with a center console, a bed-view camera, a 7-speaker Bose audio system, and 20-inch gloss-black aluminum wheels. A surround-view camera, front/rear park assist, rear cross-traffic alert, and a haptic safety-alert driver seat are included, along with ventilated front seats.
The AT4 Premium Plus Package adds a power-sliding rear window, a power sunroof, a camera as a rearview mirror, wireless phone charging, and more.
The Technology Package, which comes included with the AT4 Premium Plus Package, is sold separately also. A digital rearview mirror and 15-inch color head-up display highlight the bonus content. Features from the AT4 Preferred Package are inserted here, too.
Adding the $1,895 destination fee to the Sierra 2500 HD AT4 base price totals $70,995. Financing for 60 months at 5% interest with $0 down works out to $1,340 per month. See 2024 GMC Sierra HD AT4 models for sale near you
2024 GMC Sierra HD AT4 includes:
Autotrac transfer case – This allows for automatic seamless shifting in and out of 4WD.
Hill-descent control – Essentially cruise control for low-speed downhill driving, this system takes the worry out of steep descents.
Skid plates – These metal plates cover vulnerable areas of the undercarriage like the oil pan, front axle, and transfer case.
2024 GMC Sierra 2500 HD Denali: $73,200; GMC Sierra 3500 HD Denali: $74,400
The listed prices are for the Sierra HD Denali Crew Cab with the standard box and 4WD.
Until the introduction of the Denali Ultimate, the Denali was the peak of GMC’s comfort, convenience, and technology features. GMC uses lots of exterior chrome on the Denali to reinforce the idea of luxury.
Gone are the red recovery hooks and gloss-black aluminum wheels, replaced with chrome ones. The Denali further builds on the AT4’s features with three years of OnStar Connected Services, cab-length assist steps, upgraded perforated-leather seats, and a universal home remote.
To spruce up your Denali, you may add the Denali Reserve Package. It adds a power sunroof, a digital rearview mirror, adaptive cruise control, and a 15-inch head-up display.
Adding the $1,895 destination fee to the Sierra 2500 HD Denali brings the total to $75,095. Financing for 60 months at 5% interest with $0 down works out to a monthly payment of $1,417. See 2024 GMC Sierra HD Denali models for sale near you
2024 GMC Sierra HD Denali includes:
Home remote – This universal transceiver offers programming for your automatic garage door and other functions like your home’s interior lights.
OnStar Connected Services – This subscription to OnStar and other services connected through your smartphone is free for three years.
Available head-up display – A projector on the dash displays essential driver information on the windshield just below the driver’s line of sight.
2024 GMC Sierra 2500 HD Denali Ultimate: $91,900; GMC Sierra 3500 HD Denali Ultimate: $95,300
The listed prices are for the Sierra HD Denali Ultimate Crew Cab with the standard box, 4WD, and the Duramax turbodiesel engine.
The new king of the mountain of Sierra HD grades, the Denali Ultimate adds 20-inch aluminum alloy wheels with gloss-black inserts, a capped fuel filler, a power sunroof, and power-retractable assist steps with LED perimeter lighting. Also included are adaptive cruise control, a 12-speaker Bose audio system, a 15-inch head-up display, and a leather-wrapped heated steering wheel.
A Kicker audio system for the MultiPro tailgate, a digital rearview mirror, and full-grain leather upholstery are standard equipment, along with pressure and temperature sensors for your trailer tires.
Adding the destination fee to the Sierra 2500 HD Denali Ultimate base price comes to $93,795. Financing for 60 months at 5% interest with $0 down, the monthly payment works out to $1,770. See 2024 GMC Sierra HD Denali Ultimate models for sale near you
2024 GMC Sierra HD Denali Ultimate includes:
Adaptive cruise control – Once you have engaged the system and set the speed, it will maintain a safe distance from the vehicle in front, braking and accelerating as needed.
Trailer-tire management – A package of sensors comes with the Denali Ultimate, which the owner installs on the trailer wheels. They measure air pressure as well as tire temperature.
Bose audio system – This 12-speaker system includes a Richbass subwoofer to deliver concertlike sound quality.
