Tranny slippage
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I have a 2010 with an auto.Since new, it has down shifted from 6 t0 5 while hauling 10,000 lbs exactly as you described. I was told it is normal. You are going from 6th with the torque converter locked up down to 6th unlocked to 5th with torque converter locked to 5th unlocked. If you are hauling on cruise control this shift happens under full throttle. To save the tranny touch it down into 5th manually before the hill. Why won't they put an Allison in this truck?
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B.k. Smith
12 Valve 2nd Gen Dodge Cummins 94-98
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01-07-2015 02:29 PM