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Not sure about the noises, but the cruise control behavior isn't too unusual. The cruise control is pretty simple-minded and doesn't cooperate with the transmission very well. When it "downshifts" to climb a grade, odds are it's still in 4th gear but the torque converter just unlocked. It doesn't like to settle back into lockup until the load on the engine is all but gone for a moment, hence the delay. Turn the Overdrive (4th gear) off when the converter unlocks and it will actually shift down to third and the TC will lock up again. It will pull better, and it will be much kinder to your tranny temp-wise. Once you crest the grade, turn Overdrive back on and it will settle back into 4-locked again.
Brent
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