ADVICE ALERT!!!! A buddy of mine re-programs GM computers and he's GOOD. You can find him on FaceBook under Street Car Garage. He reflashed all of our police Tahoe's and he did my truck. He can disable the DoD/AFM which will extend engine life and he does custom tunes. He also has a chassis dyno. If anyone wants his contact info, PM me. He's located just east of Stillwater.