TCM / TCU sorce or rebuild

[Matthew. Collins]

I HAVE A 2012  3500 HD 6.6 WITH THE 6 SPEED ALLISON.  MY TCM quit. I can't for the life of me sorce one. I am looking for info on a sorce or someone that can reman my old tcm.  Any help would be greatly appreciated.  It has a t14 ac Delco  tcm. 

[Niners 365]

15 hours ago, Matthew. Collins said:

I HAVE A 2012  3500 HD 6.6 WITH THE 6 SPEED ALLISON.  MY TCM quit. I can't for the life of me sorce one. I am looking for info on a sorce or someone that can reman my old tcm.  Any help would be greatly appreciated.  It has a t14 ac Delco  tcm. 

https://www.generalusedtruckparts.com/parts/?vid=1119&unit=2012-gmc-acdelco-computer-electronic-control

 

Also thier are several listed via Carparts.com and Rock Auto.com, however they are really spendy

That link I sent you deals with used parts. That link is for your TCM you are looking for. You have to call and find out info. Otherwise it's thru dealer, then your really paying a price.

[dsr611]

In the same boat with my '11.  I've found some online, but the sellers are asking premium+ prices for them...upwards of $4000 in most cases.  Even found one place that will rebuild/repair it for only $2500

I found mention of a place on one of the Duramax boards called G7 computers in NY that will rebuild them.  Found reviews online for them and they seem to be legit.  Also found a place called Flagship One that claims to be able to rebuild/repair them.  I sent them an email this morning inquiring about a rebuild/repair.

 

https://www.g7computers.com/

https://www.fs1inc.com/transmission-control-module.html

[Bruce Alsup]

General Motors produced several years of vehicles with a faulty transmission control module. From 2008 thru 2015, Chevrolet and GMC 2500 & 3500 trucks with the 6.6 L Duramax engine and Allison 1000 transmission all used the same TCM; part number 24256861. This part has experienced a very high failure rate. During the summer of 2022, the meager stock of replacement parts was exhausted and GM has not made plans to manufacture new parts. An estimated 5000 vehicles are currently unusable due to the failure of this part and no new parts available. It is our intent to file a class action law suit against both General Motors and Allison Transmission to have new parts manufactured.

If you are interested in joining this class action, email to [email protected] with the phrase "GM/Allison Transmission Control Module Class Action Lawsuit" as the subject.

Please comment on your experience with your 2008-2015 Chevrolet/GMC truck with the Duramax/Allison 1000 transmission. 

 

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