2024 GMC Sierra HD

The 2024 GMC Sierra Heavy-Duty models are set to receive a major refresh for 2024, including new front and rear end designs, a new interior, along with potential powertrain updates.

It’s worth noting that this refresh was originally scheduled for the 2023 model year, however, the product cycle is behind due to complications brought on by COVID-19 and a shortage of superconductor chips. Additionally, the fourth-generation Sierra HD pickups are currently performing extremely well in the market place.

2024 GMC Sierra HD Quick Facts
Assembly Location	GM Flint Assembly in Flint, Michigan, USA
Body Style(s)	Regular Cab, Double Cab, Crew Cab
Layout	Front-Engined, Longitudinal
Engine(s)	6.6L L8T V8, 6.6 L5P V8 Duramax (Diesel)
Transmission(s)	6-Speed Auto, 10-Speed Auto
Drive Wheels	Rear-Wheel-Drive, Four-Wheel-Drive
Availability	U.S.A., Canada, Mexico
Predecessor	2023 GMC Sierra HD
Successor	2025 GMC Sierra HD

Changes, Updates, New Features

Coming soon.

The updates and changes described here are specific to the U.S. market and may differ for other markets.

Powertrain

The 2024 GMC Sierra HD is expected to continue to offer the following engine and transmission choices:

Engine	Fuel	Aspiration	Transmission	Horsepower @ RPM	Torque @ RPM	Axle
6.6L L8T V8	Gasoline	Naturally Aspirated	6-Speed Automatic (MYD)	401 @ 5200	464 @ 4000	3.73
6.6L Duramax L5P V8	Diesel	Turbocharged	Allison 10-Speed Automatic (MGM, MGU)	445 @ 2800	910 @ 1600	3.42