TCM Transmission Control Module?

AlphaCT · Nov 9, 2016

Last Friday my 2016 2500 went into limp mode while coming off the highway. Called FCA roadside and had it towed to a local dealership. They called me later in the day to let me know is was a bad TCM and that they had to special order one and it would take a few days. Get a call yesterday and they say it will be little bit on the part as it is now on backorder. Anyone hear of an issue with the TCM or have any experience with this?

MADDOG · Nov 10, 2016

I hear about TCM communication issues all the time. Usually they are a momentary code.

I also hear about backorder on a LOT of parts for the newer Gen 4 trucks. I guess everything they have on hand is allocated to production, not spares, at this point.

Good luck.

jpsfj60 · Nov 10, 2016

That's not your TCM. Tell the master tech to check pin fitment issues. I have already
been thru this problem with my 16 2500HD. Look for my transmission code thread!

AlphaCT · Nov 10, 2016

MADDOG said:
I hear about TCM communication issues all the time. Usually they are a momentary code.

I also hear about backorder on a LOT of parts for the newer Gen 4 trucks. I guess everything they have on hand is allocated to production, not spares, at this point.

Good luck.

Thanks MADDOG.

jpsfj60 · Nov 10, 2016

If you pull over and restart your truck it will not be in limp mode anymore. IF
it goes back into limp mode after that then good luck finding a good tech to fix
this problem!

AlphaCT · Nov 10, 2016

jpsfj60 said:
If you pull over and restart your truck it will not be in limp mode anymore. IF
it goes back into limp mode after that then good luck finding a good tech to fix
this problem!

jpsfj60 - just read your thread. What a nightmare! When I turned off the truck and restarted it the truck went back to limp mode. The dealer says they replaced the TCM with a demo one they had at the dealership and it fixed the issue (so they say) the new TCM is backordered, However I am going to go to the dealership today with your thread and bring it to their attention. Thanks for the the info brother. I'll update when I have more info

jpsfj60 · Nov 10, 2016

Good Luck!!

AlphaCT · Nov 22, 2016

UPDATE: I have had my truck back since Friday 11/18 with no issues. From the Code P0750 they found loss solenoid circuit and found transmission valve failed. They replaced with new valve body assembly, new filters and fluid and so far, so good! Feels great to be back in my truck!

MN-Ram · Nov 22, 2016

My good friend had a 2015 Cummins 2500 and he had the same problem. The TCM had to be replaced at about 15-20,000 miles. He was not happy. But that seemed to fix that problem.

TCM Transmission Control Module?

AlphaCT

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AlphaCT

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