Tranny update leads to PCM TCM and New Tranny - Jeep Garage - Jeep Forum

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Old 03-21-2015, 10:08 AM
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Tranny update leads to PCM TCM and New Tranny

Have a 2015 Limited 3.2 ADII loaded and took in for service and they mentioned update so i figured what the hell. Everything seemed to be great and even thought may have been shifting a bit better. Then got stuck in driveway in 4 inches of snow and got out but 4x4 not available message came up and i was like wtf There is no way i should have been stuck at all let alone error 4x4 lights. After that everything seemed fine but driving home one night turned onto the highway and on popped the engine light and another error light for the start/stop system and the transmission wouldn't shift outta 4th. stopped jeep and shut off and turned on and then tranny worked fine but still had engine light. long story short, change PCM and same thing, changed TCM and they test drove and gave back and came back within a block of driving. So at dealer and changed whole transmission and gonna test on monday and give back. Anyone else have anything similar? Oh and all at 7400km Back history on Jeep is that at 1800 km had a belt noise and they changed belt and noise came back and then jeep ate the belt and cam seal. Dealer changed quick but turns out from factory the alternator bolt was not tightened correctly and came out and caused belt issues. Not a happy camper but love the Jeep. New Trailhawk on the way to dealer and trading my built on a friday limited to a trail hawk Hoping i have better luck with the next one

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Old 03-21-2015, 11:32 AM
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Re: Tranny update leads to PCM TCM and New Tranny

Curt:

This is exactly why I refuse all transmission TSBs/flashes. I have a setup similar to yours. Cherokee Limited, 3.2L and ADII. The only difference is mine is a very early build that I custom ordered. It was delivered mid November 2013. I have never, ever had a TSB, recall, flash done to my transmission and it has been perfect so far. I have several Chrysler engineers who live in my neighborhood as I live close to Chrysler's headquarters in Auburn Hills, Michigan. They all advised me against doing any TSBs/flashes to the transmission, as did my dealership's service manager. My service manager freaked when he saw recall R01 and told me I would be absolutely crazy to tell him to do that to my transmission. Their main problem with the TSBs/flashes is there is not way to go back short of replacing your transmission if the TSB/flash screws things up. According to the engineers the main problem with the 9 speed is that it should be being built in a "clean room". The tolerances in the transmission are so tight that any shavings that fall into it while being built are causing problems. I quote them in saying, "no flash is ever going to fix this shaving/tolerance problem".
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Old 03-21-2015, 03:25 PM
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Re: Tranny update leads to PCM TCM and New Tranny

Yeah not gonna be touching any updates now. My trail hawk that's coming will it come with all updates? Just built feb 14 And new tranny will it all come pre flashed and shit?


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