Vortec: Too much engine? (Mileage questions)
Hi, I'm getting dangerously close up upgrading my 1999 Yukon with a 5.3 engine to a 2007 Yukon XL with a 6.2 engine. I was test-driving it today and saw the display list an average MPG of 11.5. Yik...
Forum Discussion
Yeah, I'd agree w/ APT. I don't think the AWD system is the way to go for towing. Last I considered it, it seems the tow ratings were actually lower than the non-AWD; just because it has a bigger engine doesn't mean it was designed with towing in mind.
The AWD is a gas mileage killer. I much prefer the selectable system found on the other GM models. You can get pretty much all of the same options on a loaded Suburban or YXL anyway. I may be biased, but that is the way we went.
I would just about guarantee that mileage of the 6.2, 6.0, and 5.3 will be within 5% of each other when towing -- they'll all be in the 8-10 range.
Good luck!
The AWD is a gas mileage killer. I much prefer the selectable system found on the other GM models. You can get pretty much all of the same options on a loaded Suburban or YXL anyway. I may be biased, but that is the way we went.
I would just about guarantee that mileage of the 6.2, 6.0, and 5.3 will be within 5% of each other when towing -- they'll all be in the 8-10 range.
Good luck!
