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The Tahoe Diesel is the most fuel-efficient SUV in its class at an official rating of 24 mpg's combined

First-in-segment1 available turbo-diesel engine brings impressive efficiency, smooth driving experience

Oshawa, Ontario (December 3, 2020) — The 2021 Chevrolet Tahoe 3.0L Duramax turbo-diesel is the most fuel-efficient full-size SUV in its class1. Better fuel efficiency supports longer trips in this iconic nameplate known for its size, capability and cargo.

The Chevrolet Tahoe with the available 3.0L Duramax turbo-diesel engine offers a fuel consumption rating2 of 8.4 L/100km highway, 11.0 L/100km city and 9.8 combined in rear-wheel-drive models. Fuel consumption rating2 for four-wheel drive models is 8.9 L/100km highway, 12.0 L/100km city and 10.6 L/100km combined.

This is Chevrolet’s first diesel inline-six engine for full-size SUVs, and the brand’s first diesel offered in full-size SUVs since 1999. In the Suburban, the 3.0L Duramax offers a fuel consumption rating3 of 8.6 L/100km highway, 11.3 L/100km city and 10.1 L/100km combined in two-wheel drive models and 8.9 L/100km highway, 12.0 L/100km city and 10.6 combined in four-wheel drive models.

The 3.0L Duramax turbo-diesel brings a refined engine experience to the already impressive redesign of the all-new 2021 Tahoe and Suburban,” said Laura Pacey, Chevrolet brand director. “Combining the diesel engine’s segment best fuel consumption with the increased space inside of the vehicle compared to the previous generation equals an all-new Tahoe and Suburban ready for the next long road trip or family adventure.”

The 3.0L Duramax turbo-diesel launched first in the 2020 Silverado, utilizing state-of-the-art technologies to optimize fuel and integrate into the all-new vehicle architecture. Small changes adapt the engine for the full-size SUV application, including enhanced noise abatement and a new engine control module, specifically designed to leverage the faster data-processing power of the all-new models. The engine is exclusively paired with a 10-speed automatic transmission for a smooth shifting experience.

With an SAE-certified 277 horsepower and 460 lb-ft of torque, the Tahoe 3.0L Duramax with two-wheel drive is capable of maximum towing up to 8,200 pounds and a max payload of 1,717 pounds4. The Suburban with the same engine is capable of a maximum towing of 8,000 pounds and a max payload of 1,625 pounds in two-wheel drive models. A standard exhaust brake is available in tow-haul mode and can provide additional driver confidence when towing.

“The 3.0L Duramax turbo-diesel brings responsive torque and a smooth driving experience, ideal for those who tow or spend many hours behind the wheel,” said John Barta, assistant chief engineer for the 3.0L Duramax. “Not only is the 3.0L Duramax a refined engine, but the total experience benefits from the efforts to deliver enhanced driving dynamics in Tahoe and Suburban through the independent rear suspension and available Magnetic Ride Control and Four-Corner Air Ride Adaptive Suspension.”

The driver-selectable stop/start technology optimizes fuel consumption by shutting off the engine at stoplights and certain other stop-and-go situations, helping to save fuel.

Customer deliveries of the 2021 Tahoe and Suburban with the available 3.0L Duramax turbo-diesel are expected early 2021.
  1. Based on Ward’s Large Sport / Utility Vehicle segmentation
  2. Fuel consumption estimates based on GM testing in accordance with Government of Canada approved test methods. Refer to for details. Your actual fuel consumption will vary. Based on MY21 Tahoe 2WD with 3.0L diesel engine.
  3. Fuel consumption estimates based on GM testing in accordance with Government of Canada approved test methods. Refer to for details. Your actual fuel consumption will vary.
  4. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.
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