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Thanks for your response. Do you think the failure of the transmission fluid temperature sensor could cause symptoms like hard shifting both while going up and down the gears and when setting the control to either D or R from Park? I though those symptoms where more indicative of the Solenoid Pack. I believe the temperature sensor is a lot more inexpensive than the solenoid pack so it would make sense to change it first, unfortunately that means we have to discard the fluid. By the way I have already changed the transmission fluid and it has not made a significant change.