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Ultra Luxury, More Towing for 2024 GMC Sierra HD plus off-road AT4X coming

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Borrowing from the improvements made to the half-ton GMC trucks, the 2024 GMC Sierra HD will also feature an ultra luxury edition, more capability, new interior and an off-road focused AT4X coming later in the year.

The 2024 GMC Sierra HD sees a slew of improvements with the most noticeable being a completely redesigned interior, the new Denali Ultimate edition, improved engine performance from the 6.6-liter V8 Duramax Diesel and gas engine. 

Plus there are improvements to the max towing numbers for both the 2500 and 3500 trucks.

These trucks will come in either regular, extended or crew cab models with two bed lengths and a rear-wheel drive version for the 3500 trucks.

What is a 2024 GMC Sierra HD Denali Ultimate?

First, let’s talk about the 2024 GMC Sierra HD Denali Ultimate. A mouthful of a name with a lot more to it than just the name.

Starting with the exterior, the grille is unique with its Vader Chrome finish and GMC badge unlike the typical red GMC color. 

The grille is bookmarked by a set of LED lights with a strip of LEDs for the daytime running lights which also broadcast a welcome to the vehicle animation turning on the light one by one. These lights also have an amber orange to white turn signal animation. 

For the hood, it has been redone slightly with a new vertical chrome styling strip in the middle of the functional hood scoop to further accent the look. On the side, there is a unique Denali Ultimate badge with the topography of the Denali mountain which has been raised away from the truck to make it stand out more.

Plus, there are now optional 22” wheels and “exclusive 20-inch Ultra-bright machined aluminum wheels with High Gloss black accents.”

Along the sides and the rear, nothing has changed from the prior generation and you do get the “multi-pro” tailgate with its various different ways to position the upper and lower tailgate to fit your needs.

Inside, again borrowing from the light-duty truck, the Sierra HD Denali Ultimate has similar colors and its Alpine Umber rich brown color on the full leather seats is accented with luxury-brand like stitching and textures. There is also a topographical relief of Mount Denali on the wood door covering the upper glovebox and unique badging with the GPS coordinates on the center console. 

The seats are all-new as well with 16-way power adjustable and massaging front seats and they are a lot more comfortable than GM seats in years past.

Finally, the premium microsuede headliner completes the luxury feel of the truck and the 12-speaker Bose Premium series with Centerpoint surround technology delivers a pure, crisp sound like I experienced in the light-duty version of this truck.…..

Could we see a $100k GMC Sierra HD truck?

Let’s talk price. Officially, GMC says pricing is to be determined. I can make a good guess though based on the GMC Sierra 1500 pricing on their website. 

The Sierra 1500 Denali Ultimate is $12,000 more than the Denali in the top engine choice, the 6.2-liter V8. 

With this information, let’s talk about the starting heavy-duty price. For the 2023 GMC Sierra HD, the top Denali trim with the single rear wheel setup is $83,645 which is $11,000 more than the gas engine version.

For the Denali Ultimate, it is easily going to be over $90,000 and would likely be around $95,000 before destination and handling fees. 

My guess is in the 3500 or 1-ton truck, this is going to be a $100,000 truck out of the door at dealers and even if not higher with dealer markup. 

Other changes for the 2024 GMC Sierra HD

While the Denali Ultimate steals the show for this story, there are other key changes for truck.

First, the 6.6-liter Duramax Diesel V8 has been improved thanks to a new turbocharger pushing performance to 470 horsepower and 975 pound-feet of torque. This means the low-end improvement of the torque curve is better by 25 percent. 

Second, this engine and the gas 6.6-liter V8 are mated to the 10-speed Allison transmission. Technically, this is an Allison-branded transmission GM builds, but it still is up to the Allison standards.

Third, a new available Max Tow package raises the max towing for the 2500 Crew Cab to 21,900 pounds with the Duramax Diesel when using a 5th wheel or Gooseneck hitch. This package uses the 3500 frame, shocks, leaf springs and larger rear axle with a 3.42 rear axle ratio to improve the 2500 performance. 

Fourth, GM added adaptive cruise control with trailering for the HD trucks. 

Also, standard safety features now include: 

  • Forward Collision Alert
  • Lane Departure Warning
  • Automatic Emergency Braking
  • Front Pedestrian Braking (new for 2024)
  • IntelliBeam auto high beams
  • Following Distance Indicator

There is an available Pro Safety Plus Package which includes new driver assistance features Rear Cross Traffic Braking and Trailer Side Blind Zone Alert. 

Other tech includes a GCW alert for when the truck is accidentally overloaded, available trailer side blind zone alert which extends the blind zone alert for the trailer, updated Transparent Trailer View that now works for Gooseneck and Fifth Wheel trailering. 

What about the other HD trucks?

For the non-luxury versions of the truck, they will see improvements inside and exterior. 

Exterior highlights include:

  • Revised front bumper, fascia, grille designs and finishes on each trim
  • Animated lighting when approaching, starting, or when using the turn signals 
  • New wheel designs on SLE, AT4, Denali and larger 18-inch polished aluminum wheels on dual rear-wheel models
  • New 22-inch accessory wheels 
  • Six new exterior colors (extra cost): Titanium Rush Metallic, Sterling Metallic, Volcanic Red Tintcoat, Redwood Metallic, Meteorite Metallic and Downpour Metallic
  • Rear wheelhouse liners standard on Denali and Denali Ultimate dual rear-wheel models

Also, there is now a badge displaying whether the truck is a 2500 or 3500 model. For years, this was a staple on the tailgate then it went away for the 2019 model year. It is nice to see this badge back and even though it is tucked away on the front bumper, at least you can now easily tell if the truck is a 2500 or 3500.

Inside, new interiors all around for the SLE and SLT trims. The AT4, Denali and Denali Ultimate will also have unique materials and styling differences with new color, stitching designs throughout. 

AT4X?

Finally, the 2024 GMC Sierra HD AT4X will be making its debut later on in the model year.

If this version follows the 1500 truck, it will be a more off-road capable model with better skid plates, bigger tires, more off-road capability and unique styling.

GM plans to start delivering the 2024 GMC Sierra HD in the first quarter of 2023 with the AT4X coming later. Pricing will be announced closer to the start of production.

The bottom line

The fight for heavy-duty truck supremacy just got a LOT more interesting. Prior to this model year, the GMC HD interiors and styling were big misses and look obviously outdated when compared to the competition. Now the luxury Denali Ultimate raises the bar on what a luxury HD can be like and the myriad of other improvements are going to make picking out a new HD truck a lot more difficult.

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Tim Esterdahl

Automotive Journalist Tim Esterdahl has been a lover of trucks and SUVs for years. He has covered the industry since 2011 and has pieces in many national magazines and newspapers. In his spare time, he is often found tinkering on his '62 C10 pickup, playing golf, going hunting and hanging out with his wife and kids in Nebraska.

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