With the introduction of a mid-cycle refresh for the 2024 GMC Sierra HD, the heavy duty pickup receives a long list of exterior, interior and technology upgrades. A notable feature is the all-new GCW Alert, which serves to measure gross combination weight while trailering.
The GCW Alert system is a new trailering aid that predicts the gross combination mass of the truck and trailer based on axle torque and vehicle acceleration calculations. If gross combination mass is predicted to be close or over the truck’s gross combined weight rating, the driver is alerted through the driver information center. The driver is alerted one time per key cycle.
The driver can turn the feature on and off on their trailer profile in the trailer app. The alert provides the driver with two distinct warnings:
- Yellow – Estimated weight of your trailer and cargo may exceed the vehicle GCW
- Red – Estimated weight of your trailer and cargo exceeds the vehicle GCW
A wide variety of additional trailering assistance technologies for the 2024 Sierra HD is included with the GMC ProGrade trailering system.
For those who may be unaware, the revised 2024 GMC Sierra is highlighted by the introduction of an all-new trim, the Denali Ultimate. This range-topping model is distinguished by Vader chrome exterior pieces, 20-inch Ultra-bright wheels, and a unique Alpine Umber interior appointment. An all-new Sierra HD AT4X variant is on the way as well.
On the exterior, the 2024 GMC Sierra HD features revisions to the front fascia, which include the bumper and grille, as well as six new exterior colors.
Moving inside, the revised truck gets unique interior treatments for SLE and SLT trims, as well as a more premium interior design for AT4, Denali, and Denali Ultimate trim.
Under the hood, most 2024 Sierra HD trim levels are equipped as standard with the naturally aspirated 6.6L V8 L8T gasoline engine, which is rated at 401 horsepower and 464 pound-feet of torque. Optional, or standard on the Denali Ultimate trim, is the 6.6L V8 L5P turbodiesel Duramax engine, which is now uprated at 470 horsepower and 975 pound-feet of torque. This represents a 25 horsepower and a 65 pound-feet of torque upgrade over the pre-refreshed models.
Regardless of engine choice, every heavy duty pickup truck is equipped with the Allison-branded 10-speed automatic transmission. This 10-speed replaces the GM six-speed used by gasoline models prior to the mid-cycle refresh.
Meanwhile, production is expected to commence in February 2023.