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2023 GMC Sierra HD

The GMC Sierra HD is expected to receive minor changes and updates for the 2023 model year.

Notably, the heavy-duty truck line was initially set to receive a major refresh for 2023 – including new front and rear end designs, a new interior, along with potential powertrain updates – however, the product cycle is now behind by a model year due to complications brought on by COVID-19 and a shortage of superconductor chips. Additionally, the fourth-gen Sierra HD models are performing extremely well in the market place. As such, the refresh is now expected to arrive for the 2024 model year.

2023 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 2022 GMC Sierra HD
Successor 2024 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 2023 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

Production

The 2023 GMC Sierra HD is expected to continue to be assembled at the GM Flint Assembly plant in Flint, Michigan, USA.

Sales

See GMC Sierra sales numbers for all markets, including the United States, Canada, Mexico, and more.

Gallery

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Discussion

Discuss the 2023 GMC Sierra HD in our GMC forum.

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