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For the most part, GMC products are slightly fancier versions of Chevrolet vehicles, sharing the same tech and powertrains, but for 2027, could that be about to change? According to Car and Driver, General Motors submitted new Vehicle Identification Number Standards documents to the federal government, and these included mention of four engine options for the Yukon for the 2027 model year, up from the three offered in Chevrolet Tahoe and Suburban SUVs. As before, GM's L84 5.3-liter V8, L87 6.2-liter V8, and LZ0 3.0-liter turbodiesel straight-six were listed, but the Yukon's filing also included the LT4 supercharged 6.2-liter V8. That's the engine found under the hood of the Cadillac Escalade-V, where it produces 682 horsepower.Supercharged V8 Would Make the Yukon Very Special
Cadillac/Dave Burnett, Puppyknuckles
The documentation also revealed the trim names for the 2027 Yukon: Elevation, Denali, and AT4. Those are the same trims listed with the 2026 model, which would appear to indicate that the supercharged V8 would appear as an option (or newly standard equipment) in the luxury-focused Denali or off-road-capable AT4 top trims, rather than a separate, performance-focused trim like the long-gone Typhoon. Without a specific new variant, it would appear that the supercharged Yukon might forgo upgraded suspension, sportier styling, and special wheels, possibly allowing it to undercut the Cadillac Escalade-V's $170,895 sticker price while delivering the same 682 horses and 653 lb-ft of torque. The LT4 engine would no doubt still be an expensive addition, and if styling were to be subtle, GMC might have trouble convincing buyers to pony up for the sleeper vibes. But that's enough speculation because GM responded to C&D after the initial report was published, saying that the LT4's listing was erroneous.The LT4 Supercharged V8 Is Not Coming to the Yukon After All
