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thanks for replying-I thought it might be some type of sensdor or electrical-but just not enought mechanical background. This gives me a place to start. I'll let you know after repair. Thanks again

Hello all-my truck has an Allison transmission and is full automatic 10 speed. A few weeks ago I noticed that at certain times while in 10 speed at speeds between 60-65 mph and while on flat terrain or hills, the engine will rev like it wants to change gears but is in 10th gear already. It...