My buddy noticed (before the fire) that when he turned on the K5's driveshaft it felt liek it was in four wheel. He said umm why is it in 4wheel? I looked at him funny cause its not. Seems like the hubs don't disengage. I never bothered to look at it but I think its been like that since I got it. I believe this may explain my abismal 5-7mpg since I got it with 2.73s.