Glad I got an 06! FWIW it's a crew cab short box Z71, and I've used the crap out of it. Hauled a lot more than I should've with a 1/2 ton, but it's done great. I should knock on wood after saying that. On highway with a tailwind I've gotten 22 mpg, but if I keep it to 60-65 I can get 17 running around here. Get too deep into it and I get 15.
A friend of mine had the same issue with oil consumption and lack of fix from the dealership with an 07 suburban, finally gave up and traded it off.
