The GMC Sierra HD range, which consists of the Sierra 2500 HD and Sierra 3500 HD, is receiving a major refresh for the 2024 model year. Announced just last week, the updates incorporate a new front fascia, new tail lamps, an overhauled interior, along with noteworthy powertrain and capability upgrades. Today, we’re taking a closer look at the 2024 GMC Sierra HD Denali Ultimate in the following GM Authority spotlight.
The 2024 GMC Sierra HD trim lineup, from bottom to top, consists of Pro, SLE, SLT, AT4, Denali and Denali Ultimate. In addition, the Sierra HD AT4X trim will arrive later on in the model year. The Denali Ultimate trim level, meanwhile, slots in at the top of the range, offering GMC’s most advanced and luxurious heavy duty pickup to date.
On the outside, the 2024 Sierra HD Denali Ultimate features a unique grille and GMC badging in Vader Chrome at the front, standard power assist steps on the sides, and the GMC MultiPro Tailgate out back. The pickup rides on trim-exclusive 20-inch Ultra-Bright Machined Aluminum Wheels with High Gloss Black accents, which are available only for single rear wheel models.
Inside, the 2024 Sierra HD Denali Ultimate gets an all-new cockpit, just like most lower 2024 Sierra HD trims. The new interior is headlined by the 13.4-inch diagonal center touchscreen and a 12.3-inch diagonal digital driver information center. A multicolor 15-inch Head-Up Display (HUD) is standard on the Sierra HD Denali Ultimate (optional on the “regular” Denali).
In addition, the Sierra HD Denali Ultimate gets an exclusive full-grain leather appointment and open-pore Paldao wood, all-new 16-way power-adjustable and massaging front seats, premium microsuede headliner, a 12-speaker Bose audio system, and a standard power sunroof.
All 2024 GMC Sierra HD models, including the Sierra HD Denali Ultimate, will ship as standard with the GMC Pro Safety suite of driver assistance technologies, which contains:
- Forward Collision Alert
- Lane Departure Warning
- Emergency Automatic Braking
- Front Pedestrian Braking (new for 2024)
- IntelliBeam auto high beams
- Following Distance Indicator
As for the powertrain options, the 2024 GMC Sierra HD Denali Ultimate will only be offered with one engine configuration – the 6.6L V8 L5P turbodiesel Duramax engine, which will be uprated to 470 horsepower and 975 pound-feet of torque for the 2024 model year, as compared to the 445 horsepower and 910 pound-feet of torque produced prior to the refresh.
This engine will pair with the Allison-branded ten-speed automatic transmission. Official pricing details are expected closer to the start of production, set to start during the first quarter of 2023