The 2024 GMC Sierra 3500 HD represents the fifth model year of the fourth-generation full-size heavy duty chassis cab, for which it receive a mid-cycle refresh.
This refresh follows the 2020 Sierra 3500 HD, which received a complete overhaul (re-engineering and redesign), followed by minor changes to the 2021 Sierra 3500 HD, 2022 Sierra 3500 HD and 2023 Sierra 3500 HD.
Quick Facts
Assembly Location | GM Flint Assembly, Michigan, USA |
Type | Full-size heavy-duty pickup truck (one ton), single or dual rear wheel |
Cab(s) | Regular Cab, Double Cab, Crew Cab |
Bed(s) | Standard Bed, Long Bed |
Layout | Front-Engined, Longitudinal |
Engine(s) | 6.6L L8T V8 (Gasoline), Turbo 6.6 L5P V8 Duramax (Diesel) |
Transmission(s) | 10-Speed Auto, 10-Speed Auto Allison |
Drive Wheels | Rear-Wheel-Drive, Four-Wheel-Drive |
Availability | U.S.A., Canada, Mexico, Middle East |
Chronology | Fifth year of fourth-generation model |
Changes summary | Midcycle refresh |
Predecessor | 2023 GMC Sierra 2500 HD |
Successor | 2025 GMC Sierra 2500 HD |
Model Line
The 2024 GMC Sierra 3500 HD is offered as a full-size heavy duty, one ton pickup across the following trim levels and configurations:
Trim Levels
- Pro
- SLE
- SLT
- AT4
- Denali
- Denali Ultimate
Configurations
- 2WD Standard Bed Crew Cab (TC30743)
- 4WD Standard Bed Crew Cab (TK30743)
- 2WD Long Bed Crew Cab (TC30943)
- 4WD Long Bed Crew Cab (TK30943)
- 2WD Standard Bed Double Cab (TC30753)
- 4WD Standard Bed Double Cab (TK30753)
- 2WD Long Bed Double Cab (TC30953)
- 4WD Long Bed Double Cab (TK30953)
- 2WD Long Bed Regular Cab (TC30903)
- 4WD Long Bed Regular Cab (TK30903)
Changes, Updates, New Features
The 2024 Sierra 3500 HD receives a mid-cycle refresh that includes a new front end design, a new cockpit (on some trims), powertrain updates, and the introduction of the new AT4 trim level.
See the complete list of 2024 GMC Sierra 3500 HD changes, updates and new features (link coming soon).
Powertrain
The 2024 GMC Sierra 3500 HD introduces a more potent turbo-diesel Duramax engine, while replacing the six-speed automatic transmission with a 10-speed transmission on models with the 6.6L V8 gasoline engine.
Engine | Fuel | Aspiration | Transmission | Drivetrain | Horsepower @ RPM | Torque @ RPM | Axle Ratio |
---|---|---|---|---|---|---|---|
6.6L L8T V8 | Gasoline | Atmospheric | 10-Speed Automatic (MKM) | RWD or 4WD | 401 @ 5200 | 464 @ 4000 | 3.73 |
6.6 L5P V8 | Diesel | Turbocharged | 10-Speed Automatic (MGM or MGU) | RWD or 4WD | 470 @ 2800 | 975 @ 1600 | 3.42 |
Production
Production of the 2024 GMC Sierra 3500 HD began on March 1st, 2023 and ended on July 26th, 2024 to make way for the 2025 model. The truck is produced at the GM Flint plant in Michigan.
Platform
The 2024 Sierra HD 3500 continues to ride on a heavy duty variant of the GM T1 platform. Otherwise known as GMT-T1 or T1XX, the architecture is designed for pickup trucks and body-on-frame SUVs.
Seating
The 2024 Sierra 3500 HD is offered in three seating configurations, seating either three, five or six passengers:
- Three-passenger configuration: this setup features a front 40/20/40 split bench seat (providing seating for three)
- Exclusive to Regular Cab models
- Five-passenger configuration (2-3): this setup features bucket seats in the front row (providing seating for two), along with a 60/40 bench seat in the second row (seating three), resulting in a 2-3 seating configuration
- Available on SLT. Standard on AT4, Denali and Denali Ultimate.
- Six-passenger configuration: this setup features a 40/20/40 split bench seat in the front row (providing seating for three), along with a 60/40 bench seat in the second row (seating three), resulting in a 3-3 seating configuration
- Standard on Pro and SLE. Available on SLT.
Beyond 2024
We expect the fourth-generation Sierra 3500 HD to remain in production through the 2027 model year, at which point it will be overhauled for a new generation.
Sales
See running GMC Sierra sales numbers for global markets.
Discussion
Discuss the 2024 GMC Sierra 3500 HD in our GMC forum.
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