Allison 5sp: 2003 2wd

kvw4x4

New member
Oct 7, 2015
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we bought a 2003 duramax 2wd with 110k miles that had a bad motor,
we swapped in a complete replacement lb7 engine,
tranny shifted good through gears goes good when you ease into pedal but when you really step on the pedal it kinda hesitates for a second or 2, Any thoughts? tranny level is good and fluid color is good.
thanks kevin