The 2025 Chevy Tahoe and 2025 Chevy Suburban roll out a mid-cycle refresh complete with a variety of changes. Among the changes are new exterior styling, an overhauled interior, and a new turbodiesel engine. Now, GM Authority has learned when new units of the 2025 Chevy Tahoe and 2025 Chevy Suburban will be available to order with the new diesel engine.
According to sources familiar with the matter, diesel-powered units of the 2025 Chevy Tahoe and 2025 Chevy Suburban will be available to order on March 3rd, 2025. The optional diesel engine has late availability as GM waits for official certification from the EPA.
Under the hood, the 2025 Chevy Tahoe and 2025 Chevy Suburban offer the new 3.0L I6 LZ0 turbodiesel Duramax, which replaces the 3.0L I6 LM2 turbodiesel Duramax offered prior to the 2025-model-year refresh. Nicknamed the “baby Duramax,” the new LZ0 is essentially the second generation of GM’s 3.0L turbodiesel engine, bringing with it enhanced performance and efficiency. Output is rated at 305 horsepower at 3,750 rpm, a 10-percent increase over the LM2, and 495 pound-feet of torque at 2,750 rpm, a 7.6-percent improvement over the LM2.
Key upgrades include steel pistons with a redesigned combustion bowl for improved efficiency, a retuned turbo compressor for better power delivery, new fuel injectors, and enhanced temperature control for optimized performance.
Also notable is the inclusion of the new diesel engine for the 2025 Tahoe Z71 and Suburban Z71. Prior to the 2025-model-year refresh, Z71 variants were available exclusively with gasoline-powered engines.
In addition to the new LZ0 turbodiesel, the 2025 Chevy Tahoe and Suburban will continue to offer two gasoline engine options, namely the naturally aspirated 5.3L V8 L84, producing 355 horsepower and 383 pound-feet of torque, and the naturally aspirated 6.2L V8 L87, rated at 420 horsepower and 460 pound-feet of torque.
Both SUVs continue to ride on GM’s T1 platform, and both are assembled at the GM Arlington plant in Texas.
Comments
March 3 2024 or 2025?
2025. Thanks for calling that out. Apologies for the typo, the post has been updated.
I saw diesel fuel the other day for $3.49. Remember the good old days when diesel was cheaper than gas, not so long ago?
Due to trucking , diesel demand stays constant
Why is the diesel LZ0 for the suburban waiting for the EPA when you can get the same LZ0 in a high country 1500 truck
They mentioned increased efficiency but didn’t indicate the percentage or how much improvement?