The 2015 Yukon uses two gasoline V8 engines depending on trim: a standard 5.3-liter V8 and a larger 6.2-liter V8 available on the Denali.
In more detail, the 5.3L EcoTec3 V8 delivers about 355 horsepower and 383 pound-feet of torque, while the 6.2L EcoTec3 V8 produces about 420 horsepower and 460 pound-feet of torque. The larger engine is reserved for the Yukon Denali and higher configurations, offering stronger towing and highway performance.
Engine options in the 2015 Yukon
The Yukon lineup can be summarized by these two gasoline powerplants:
- 5.3-liter EcoTec3 V8 — 355 hp and 383 lb-ft of torque
- 6.2-liter EcoTec3 V8 — 420 hp and 460 lb-ft of torque; available on Denali
In short, the Yukon’s engine lineup centers on a standard 5.3L V8 with an optional 6.2L V8 upgrade for the Denali trim, delivering significantly more power for heavy-duty use.
Performance and drive notes
The engines are part of GM’s EcoTec3 family and are paired with GM’s automatic transmission system. The 5.3L focuses on everyday usability and efficiency for a full-size SUV, while the 6.2L targets higher towing capacity, quicker acceleration, and stronger highway performance.
Summary
For the 2015 Yukon, buyers had two gasoline engine options: a standard 5.3-liter V8 (355 hp, 383 lb-ft) and an optional 6.2-liter V8 (420 hp, 460 lb-ft) available on the Denali trim. These engines define the Yukon’s balance of everyday practicality and capable performance for heavier loads.
Is 2015 a good year for Yukon XL?
Among the 82 owners who provided feedback on the 2015 GMC Yukon XL for Kelley Blue Book, consumer sentiment is mostly positive, with 68% recommending the vehicle. As a whole, consumers found the vehicle's styling and comfort to be its strongest features and value to be its weakest.
What year to stay away from Yukon Denali?
But not every Yukon is created equal. With a reputation for questionable reliability, caution is essential—especially when you're considering a used vehicle. Avoid the most problematic model years, like the 2015 GMC Yukon, and be wary even with luxury trims like the Yukon Denali.
What Yukon has the 5.3 engine?
2026 Yukon
The 2026 Yukon comes standard with a 5.3-liter V8 engine producing 355 horsepower and 383 pound-feet of torque.
What engine is in a 2015 GMC Yukon?
The standard engine is the same 5.3-liter V-8 found in the Sierra; in the Yukon, it's rated at 355 horsepower and 383 pound-feet of torque.