MPG for 3/4 Yukon XL? How much worse than 1/2 ton with 5.3 liter engine.
3/4 ton has new engine and 6 speed transmission and weighs about 600 lbs than the 1/2 ton version. Dealer tells me the 3/4 has heavier frame, bigger axels, etc. Trying to decide between the two as I tow a bigger boat. Is there a ride tradeoff with the 3/4 ton?