The refreshed 2024 GMC Sierra HD lineup is almost here, with production set to begin next month at the GM Flint assembly plant in Michigan. Even with the production start so close, we’re still discovering new details about the upcoming heavy-duty pickup, and now, GM Authority has learned that the Sierra HD lineup will get standard IntelliBeam headlamps.
The IntelliBeam headlamps with automatic high beam on/off function (RPO code TQ5) will be equipped as standard across the entire Sierra HD lineup, including all trims on both the 2500 HD and 3500 HD pickups.
It’s worth noting that on the 2023 GMC Sierra HD lineup, the IntelliBeam headlamps weren’t offered at all on the base Pro trim level, and were part of the Driver Alert Package II (PDJ) on SLE, SLT and AT4 trims. In addition, this feature was standard affair on the Denali trim level.
As a reminder, the GMC Sierra HD pickup truck boasts the most loyal customer base of all GMC models, as well as a high conquest rate over customers of other brands. As such, the popular heavy-duty pickups mid-cycle refresh puts GMC in an advantageous position to develop an even stronger customer base.
In regards to the refresh itself, the 2024 Sierra HD introduces a revised front fascia, reworked cockpit, updated powertrains, and the introduction of the all-new Denali Ultimate trim level. This range-topping trim is notable for its Vader Chrome exterior bits, which give the pickup a more sinister visual. Later this year, the all-new GMC Sierra HD AT4X will debut as well.
On the outside, the revised front fascia will include updates to the grille and bumper, along with six new exterior paint colors. Meanwhile, the SLE and SLT trim levels get a unique interior treatment, while the AT4, Denali and Denali Ultimate trims are granted a more premium interior design inspired by the one in the Sierra 1500.
Under the hood, most of the 2024 GMC.Sierra HD lineup is equipped with the naturally aspirated 6.6L V8 L8T gasoline engine as standard, rated at 401 horsepower and 464 pound-feet of torque. Included on the Denali Ultimate, and optional on all other trims, is the 6.6L V8 L5P turbodiesel Duramax engine, uprated to produce 470 horsepower and 975 pound-feet of torque.
No matter the engine choice, every 2024 Sierra HD is equipped with the Allison-branded GM 10-speed automatic transmission as standard. It replaces the GM six-speed automatic used by gasoline models prior to the mid-cycle refresh. Currently, official pricing is unknown, with more details expected closer to the start of production.