GMC Reveals 2024 Sierra HD Lineup, GM Announces Personnel Changes

The GMC brand of Detroit’s General Motors Co. today announced the 2024 GMC Sierra HD lineup, led by the first Sierra Heavy Duty Denali Ultimate, featuring premium luxury and comfort, turbocharged pulling power, and elevated technology.
Front view of the GMC Sierra 3500 HD Denali. // Courtesy of GMC
Front view of the GMC Sierra 3500 HD Denali. // Courtesy of GMC

The GMC brand of Detroit’s General Motors Co. today announced the 2024 GMC Sierra HD lineup, led by the first Sierra Heavy Duty Denali Ultimate, featuring premium luxury and comfort, turbocharged pulling power, and elevated technology.

“The new and enhanced 2024 Sierra HD builds on an already winning foundation,” says Duncan Aldred, vice president of global Buick and GMC. “This truck elevates the HD segment with the introductions of the Denali Ultimate trim and will soon add the seriously off-road capable AT4X trim, further strengthening the dominance of the GMC truck portfolio.”

In addition to the debut of the Denali Ultimate trim, the 2024 Sierra HD will build upon GMC’s premium off-road offerings, introducing the off-road optimized Sierra HD AT4X trim later in the model year

The 2024 Sierra HD lineup includes 2500HD and 3500HD models, in Regular Cab, Extended Cab, and Crew Cab configurations — with dual-rear-wheel models available on 3500HD. They support the lineup’s highest trailering capacity with up to 36,000 pounds available. Trims options include Pro, SLE, SLT, AT4, Denali, and Denali Ultimate, and the AT4X trims.

The lineups enhanced power with the combination of the available 6.6-liter Duramax Turbo-Diesel V-8 and 10-speed Allison transmission delivering 470-horsepower and 975 pound-feet of torque, providing 25 percent more low-end torque versus the current model year.

Max towing across the lineup is up to 21,900 pounds on the 2500HD Crew Cab, up to 22,500 pounds on the 2500HD, and a 4,000-pound increase over the current model with up to 36,000 pounds on the 3500HD.

Available trailering assistance technologies include GMC’s ProGrade trailering system, offering up to 14 camera views and updated technologies including an available largest in-class 13.4-inch-diagonal tablet-style infotainment touchscreen display.

Inside, GMC designers created new interiors on SLE and SLT trims, as well as unique GMC interior designs for AT4, Denali, and Denali Ultimate trims. There are also new color and stitching designs throughout, with more premium materials throughout the cabin, further elevating the Sierra’s look and feel.

The 2024 Sierra HD lineup is elevated with styling and design updates, inside and out. Exterior highlights include revised front bumper, fascia, and grille designs and finishes on each trim; animated lighting when approaching, starting, or when using the turn signals; new wheel designs on SLE, AT4, and Denali, and larger 18-inch polished aluminum wheels on dual rear-wheel models; new 22-inch accessory wheels; six new exterior colors including Titanium Rush Metallic, Sterling Metallic, Volcanic Red Tintcoat, Redwood Metallic, Meteorite Metallic, and Downpour Metallic; and rear wheelhouse liners standard on Denali and Denali Ultimate dual rear-wheel models.

The first-ever Sierra HD Denali Ultimate is the most premium, luxurious and technologically advanced Sierra HD yet, equipped with unique enhancements to the overall design and premium interior appointments, more standard technologies and standard turbocharged performance with the enhanced 6.6L Duramax Turbo-Diesel and Allison 10-speed transmission.

The Denali Ultimate is distinguished by an exterior featuring a unique grille and GMC badging in exclusive Vader chrome, along with exclusive 20-inch ultra-bright machined aluminum wheels with High Gloss black accents, and unique fender badging featuring topography of Mount Denali, the highest point in North America.

Additionally, Denali Ultimate will include a six-way MultiPro Tailgate with a standard Kicker audio system. Power assist steps also come standard

Inside, Denali Ultimate’s exclusive Alpine Umber interior featured full-grain leather appointments and open-pore Paldao wood throughout. The wood’s darkened finish creates a distinctive color blend, while the unique graining adds bespoke attention to detail.

The available enhanced 6.6-liter Duramax Turbo-Diesel, paired with the 10-speed Allison transmission offers more power across the entire operating speed range. Specifically, low-end torque production increases up to 25 percent compared to the current model for improved towing performance.

This latest iteration of the Duramax engines adds additional refinements including a more efficient turbocharger with improved efficiency to boost low-end torque; increased power and torque over the entire operating speed range; improved engine braking with a more powerful turbo vane actuator and uprated valve springs; new cylinder heads with improved cooling jackets; an all-new combustion system within the heads that’s matched with next-generation, higher-flow injectors and greater fuel injection pressure; and a new engine controller.

The 2024 Sierra HD will also offer the most trailering assistance technologies in the heavy-duty class through the available ProGrade Trailering System. This includes a suite of available intelligent trailering assistance technologies designed to help streamline the hitching and towing process, with integrated tools that help enhance customers’ feelings of safety, confidence, and visibility.

Available enhanced transparent trailer view for gooseneck and fifth wheel trailering allows the driver to virtually “see through” the trailer. Using the camera mounted on the rear of the truck and an accessory camera on the back of the trailer, it pieces together a view of the area behind the truck and trailer as if the trailer was not there, improving visibility. An enhanced version of this technology for model year 2024 enables compatibility with gooseneck and fifth-wheel trailers.

Available trailer side blind zone alert extends side blind zone alerts to include the blind zone areas around the trailer. New gross combined weight (GCW) alert warns the driver if the vehicle and trailer weight exceed the vehicle’s GCW rating. New available adaptive cruise control with trailering allows the Sierra HD’s available adaptive cruise control to be used while trailering and to account for additional drag and increased braking distances when towing a trailer.

The refreshed 2024 GMC Sierra HD will arrive at dealerships in the first quarter of 2023, with the AT4X coming later in 2023. Pricing will be announced closer to the start of production.

In related news: Detroit General Motors Co. has announced the appointment of Jonathan McNeill to its board of directors, and named Arden Hoffman as senior vice president and chief people officer in light of the retirement of Kim Brycz after nearly 40 years.

McNeill is co-founder and CEO of DVx Ventures, which focuses on creating and scaling breakthrough businesses that will have a positive impact on the world. McNeill founded DVx in 2019 after driving significant growth at Lyft Inc. as COO, and at Tesla Inc. as president of global sales, delivery, and service.

“Jon’s passion for customers and track record driving growth in the transportation sector will be a tremendous asset to GM as we accelerate toward an all-electric future,” says Mary Barra, chair and CEO of GM. “His experience driving constructive disruption to grow businesses and his commitment to making a positive impact on society will be invaluable as we reimagine how our customers and communities move through the world.”

Before joining Tesla, McNeill was the CEO of software company Enservio Inc. Prior to that, he founded and sold multiple successful technology and retail companies including Midwest Cycling, Sterling Collision Centers Inc., First Notice Systems, and Before You Move.

GM’s Board now has 13 directors who have senior leadership and board experience across manufacturing, information technology, digital commerce, retail, higher education, investment management, international affairs, defense, transportation, cybersecurity, and pharmaceuticals, among other fields. Six of GM’s directors are women and 12 are independent.

Hoffman’s appointment is effective Jan. 1, 2023. Brycz’s retirement also is effective Jan. 1, 2023. Brycz has led GM’s HR team since 2018.

Brycz joined GM in 1983. Prior to leading GM’s global HR team, she spent most of her career in the company’s global purchasing organization, including serving as executive director of global purchasing from 2013 to 2018.

“When Kim shared her plans to retire several months ago, I reflected on the significant contributions she has made to GM over the years. She has built a world-class HR organization that has been instrumental to our ongoing transformation,” says Barra. “Arden’s deep background leading the HR function for fast-growing global tech companies makes her the right leader to continue that momentum and deliver our future talent portfolio.”

Hoffman joins GM with an extensive background in the tech industry. At Cruise, she served as the chief people officer and supported the company’s mission to build the most advanced self-driving vehicle by creating a high-performance culture where Cruisers can do their best work.

Before Cruise, Hoffman was the vice president of people at Dropbox, where she was responsible for scaling the company and culture across several global offices. In this role, she helped guide the team from a private startup to a publicly traded company. Prior to Dropbox, Hoffman served in numerous people leader roles at Google and Goldman Sachs.

Hoffman has a bachelor’s degree from the University of California, Berkeley and an MBA from the Wharton School of the University of Pennsylvania.