Marks Avalanche is free of all the cladding that these models typically suffer. And its my favorite gm color! 5.3 with 223 231 on a 112 cam. This thing has a nasty idle, but is smooth and nice to drive. The 5.3 makes the speedo climb at an impressive rate. Looks great and goes too!
The last tank Mark achieved 19us/22.8imp mpg with Lean Cruise enabled.