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Chevy '04 LB7, Edge Hot


Rebuilt 1,000 with shift kit. From third to third lock-up transmission shifts straight into fourth lock-up with very hard shift. Also feels like engine is de-fueling. Why doesn't it go into fourth THEN fourth lock-up? Do you think there is a problem in the valve body? PLEASE HELP :) Allison dealer COULD NOT!
 
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