AmazinglySmooth
Full Access Member
- Joined
- Jan 11, 2012
- Posts
- 147
- Reaction score
- 6
I have the 6.2 in my Denali XL AWD, which I had in for service recently. They loaned me a Yukon SLE with the 5.3. There is no comparison. The 6.2 blows it away. The 5.3 feels like it is trying too hard and always downshifting. However, the 5.3 used much less fuel 17MPG vs. 12MPG in mine.