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post #1 of 3 (permalink) Old 12-12-18, 03:36 PM Thread Starter
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Navigator Transmission slipping

2008 Lincoln Navigator 5.4 Automatic VIN: LMFU285X9EJ00688. acts like the tranny is slipping. Sometimes it will not shift out of 3 gear. You can stop place in park and take off again and it normally works. There was a wrench indicator came up on the dash. This has been happening the last few days. I just replaced filter and fluid today and still the same problem. I did borrow a friends Foxwell scanner had two codes PO741 and PO735. I also ran a auto scan and had
PMC-Powertrain Control Module Fault.
TCM Transmission Control Module. Fault
ACM Audio Control Module. Fault
Any help would be greatly appreciated. Thanks

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post #2 of 3 (permalink) Old 12-12-18, 03:42 PM Thread Starter
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Re: Navigator Transmission slipping

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post #3 of 3 (permalink) Old 12-12-18, 07:18 PM
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Re: Navigator Transmission slipping

Common possible cause between the two diagnostics is the transmission control module. You may find it better to have a garage look at it.


https://www.automotivetestsolutions....on-control.pdf

Ever notice that there's so many high performance parts available for GM products?

Did you ever think that maybe they NEED them?
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