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Old 05-09-2019, 08:30 PM   #9 (permalink)
EcoModding Lurker
Join Date: Oct 2013
Location: Amherst, Ohio
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I had a 04 Envoy, I sold it with 165,000 on it and it still shifted like a dream.
I read it was a Corvette trans with a different tail shaft to accommodate the 4WD and the parts interchanged, there was a shift valve upgrade most were doing that acted like a shift kit.
Check out forums, there's tons of information there and I used it like a Bible when I had mine. Those guys were really sharp and knew their stuff.
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