Originally Posted by Wisconsin Camper
Has anyone noticed a difference with a 3.73 rear axle versus the 3.42?
Our Yukon seems to do ok with the 3.42, but thought one with the 3.73 would be better.
If the 3.73 isn't going to make a difference, than the 3/4 ton Yukon might be the right choice.
I used to tow with a 2004 Silverado with the 5.3L and the 3.42 rear end. Crap. Very weak. But the gas mileage was awesome!
Now with teh Z71 half ton, 5.3L and 3.73 rear end... pulls great and still doesn't break the bank to drive around. (or off the lot).