The 2008 GMC 6.2-liter V8 delivers about 400 horsepower.
In 2008, GMC’s 6.2-liter V8 (the L92 family) powered key models such as Yukon, Yukon XL, Sierra Denali, and Escalade, providing roughly 400 hp and about 417 lb-ft of torque. The exact figure is typically quoted as 400 hp (net) at 6,100 rpm with torque around 417 lb-ft, though ratings can vary slightly by model and SAE measurement method.
Engine specifications and context
The 6.2-liter V8 used in 2008 GMC vehicles is part of GM’s small-block family and is commonly identified by the L92 designation in that era. It was designed to deliver strong performance for full-size SUVs, trucks, and upscale pickups, pairing with GM’s automatic transmissions to leverage the engine’s torque for towing and acceleration.
Power figures by model
Below are the main 2008 GMC models that utilized the 6.2L V8 and their typical horsepower figures.
- GMC Yukon Denali — 400 hp
- GMC Yukon XL Denali — 400 hp
- GMC Sierra Denali — 400 hp
- GMC Escalade — 400 hp
Across these 2008 models, the 6.2L V8 maintained its near-400-horsepower output, reinforcing the engine’s role as a performance-oriented option in GMC’s range that year.
Notes on ratings
Engine power figures can vary slightly based on measurement standards (SAE net vs. gross) and model-specific tuning. For 2008, the standard reference was typically around 400 hp with 417 lb-ft of torque, aligning with the Denali-grade trims that emphasized performance.
Summary
In short, the 2008 GMC 6.2-liter V8 is commonly cited as producing about 400 horsepower, underpinning the capability of the Denali-equipped SUVs and trucks in that year.