21-005-15a - 05/07/15 FLASH: 2014 TRANSMISSION SHIFT ENHANCEMENTS (SRT) - Jeep Garage - Jeep Forum

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Old 06-17-2015, 09:36 PM
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21-005-15a - 05/07/15 FLASH: 2014 TRANSMISSION SHIFT ENHANCEMENTS (SRT)

Just wondering if anyone in Canada specifically has received this TCM update? Or even the one that it supersedes (supersedes 21-005-15 dated 01/29/15).

I've been having shift quality issues since day one, but every time it's been in for service in the last year the dealer keeps telling me there are no TCM updates available. They suggested that this TSB might only be in the US, or hasn't arrived in Canada yet. I find that hard to believe.

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Old 06-18-2015, 11:19 PM
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Re: 21-005-15a - 05/07/15 FLASH: 2014 TRANSMISSION SHIFT ENHANCEMENTS (SRT)

I haven't had the update yet, or even inquired about it here, as I haven't even had the first service yet….getting close though. Im a bit hesitant to get anything done, as my rig doesn't do the noticeable 6-5 shift very often…worried an update could make to worse…kind of waiting to see what mbrs here working with dealers for more positive results. Fingers crossed.
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Old 07-15-2015, 09:45 PM
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Re: 21-005-15a - 05/07/15 FLASH: 2014 TRANSMISSION SHIFT ENHANCEMENTS (SRT)

If anyone in the US does go in to have this TSB applied, after the TCM is flashed, could you please ask the tech to make note of the TCM S/W Version in the wiTECH tool?

Mine is currently at version 15.14.00, and they say there are no new updates available, but I haven't had a TCM flash in over a year and there have been at least 3 additional TSBs since then that include a TCM flash.
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