Blog / New Inventory

Which GMC Trucks are Diesel?

Black GMC pickup truck driving along a coastal highway at sunset, shown from a front three-quarter angle with ocean views and cliffs in the background

The current GMC lineup features a total of three vehicles with available diesel engines, with two being legendary pickup trucks from the Sierra series:

2024 GMC Sierra HD Diesel Engine

The new Sierra Heavy Duty, or HD features an available 6.6-liter Duramax Turbo-Diesel V8 engine, allowing for incredible efficiency, responsiveness and power:

  • Horsepower: 470 hp
  • Torque: 975 lb-ft
  • Available maximum towing: 36,000 lbs
  • Available maximum payload: 6,584 lbs
  • Allison 10-speed automatic transmission
  • 3.42 axle ratio

This diesel engine offers optimized performance through its dual-path intake system, which draws dense, cool air through both the hood scoop and the larger grille. The Duramax Diesel engine also comes with an after-run cooling function to continue to idle the engine after extended and exhaustive periods of use for proper cooldown of vital underhood components.

2024 GMC Sierra 1500 Diesel Engine

Despite being a light-duty pickup truck, the new Sierra 1500 certainly shouldn’t be taken lightly – Lima area shoppers can choose the available 3.0-liter Duramax Turbo-Diesel engine to enjoy the following specs both on and off-road:

  • Horsepower: 305 hp
  • Torque: 495 lb-ft
  • Available maximum towing: 13,300 lbs
  • Available maximum payload: 1,8880 lbs
  • 10-speed automatic transmission
  • Estimated MPG: 23 city / 29 highway (2WD)
    • Best-in-class highway fuel economy with the available 3.0L Turbo-Diesel
  • 3.23 axle ratio

The enhanced engine features key component upgrades including steel pistons with a revised combustion bowl, retuned turbo compressor, fuel injectors and improved temperature control features. With tests to see how the engine would perform in extreme driving and adverse weather conditions, this engine is ready for a variety of scenarios.

Find a New Diesel GMC Truck For Sale in Lima, OH

If you’re interested in the 2024 GMC Sierra HD or Sierra 1500, schedule a test drive at our Lima dealership. If you have any questions about either GMC truck with a diesel engine or other available models in our new GMC inventory, be sure to contact us at Tom Ahl Buick GMC serving the Lima, Ottawa and Delphos area.

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