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.
|Assembly Location||GM Flint Assembly in Flint, Michigan, USA|
|Body Style(s)||Regular Cab, Double Cab, Crew Cab|
|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
The updates and changes described here are specific to the U.S. market and may differ for other markets.
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|
The 2023 GMC Sierra HD is expected to continue to be assembled at the GM Flint Assembly plant in Flint, Michigan, USA.
See GMC Sierra sales numbers for all markets, including the United States, Canada, Mexico, and more.
Discuss the 2023 GMC Sierra HD in our GMC forum.
Sierra HD News
2024 GMC Sierra HD Can’t Be Ordered With E85 FlexFuel Capability For Now
Typically only available on Pro trim levels.
Whipple Will Soon Launch A GM 6.6L L8T V8 Supercharger Kit
Output boosted to 700 pound-feet of torque.