06-07 LBZ & LLY Duramax Powertrain
2006 LBZ, 157k miles, 6 speed allison. stock besides exhaust, tune, and lift pump. Lately when rolling to a stop while lightly applying brakes, I’ll feel the truck hiccup and lurch/buck forward. When watching my edge, it looks like the truck will downshift through the gears, once it gets to...