Torque converter taking a dump?

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PartTimer

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Jan 15, 2004
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The tranny in my 99 expy has been acting a little funny, but has gotten worse in the last few days. I noticed when I lift off the gas at freeway speeds it kinda lurches and the RPM's don't drop way down, they just slowly go down.
During normal acceleration it seems like it has 5 gears as well. The 1-2 shift seems normal, then the the 2-3 but the RPM's drop a few hundred, then a second later drop down again followed by a final shift to OD. This is a 99 expy 5.4 with 50k on it I have changed the fluid three times since I got it 3 years ago.
 
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