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Old 07-15-2016, 03:00 PM
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OrangeFurious OrangeFurious is offline
Join Date: Feb 2016
Location: Redmond, WA
Posts: 325
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Bumping old stuff, but this is a fantastic thread. I had almost the exact problems on my 4.4i ('05 / 181k) and occasionally get a code P17E9 on my 4.8is ('06, 88k) - will look into the solenoids for the 4.8is.

Oddly enough, what fixed my slipping and frequent failsafe modes on the 4.4 was brake rotors. Just about all my transmission issues cleared up within a week of replacing all four rotors and pads.
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