Programming TCM
I need to replace and program the TCM in this vehicle. One of the steps outlined in SI was to read the "end model part number" However the R and R tech already replaced the TCM (it is part of the valve body) before I got to it.
Do I need to have him install the old TCM or is there a work around or another way I can get the info I need from the controller?
Have you already hooked up to the vehicle and tried using SPS? I have done several of these types for transmission shops. using SPS I go through the replace and program without any issues.
No. Asking before I start.
As Justin said, it's probably not necessary unless SPS requires you to enter it. Connect to the TCM first and pull the info from it.
I have never been asked this when programming a TCM on a GM. That’s not to say SPS won’t ask you. You may still be able to read the number using a scan tool even though the TCM has not been programmed yet. The modules usually aren’t completely blank and you should still be able to communicate with it.
I looked through the steps in Alldata and one of the preliminary steps was to pull the "end number" from the old TCM before removing it. I wasn't sure how necessary this step was.
That is under the “notes” section which often is a generic cover everything area. I wouldn’t sweat it. There most likely will be enough slack in the harness to plug in the old module without installing it if absolutely needed.
Rudy, As other have said usually not an issue. You can retrieve end model part number by hooking up GDS2 in this case and go into TCM. Couple of questions. Is this a GM valve body/TECM? Is this a remanufactured transmission from GM or third party source? Also, do not forget to update PCM if needed as well. Any 6 series GM transmission should have latest calibrations in both TCM and PCM when
I cant look up the old TCM end model number because it is not in the vehicle anymore. Yes Valvebody/TCM. Dealer sourced. Will do.
you might be thinking of Ford where there a you need put in information for solenoid's
I have done dozens of them all mobile jobs I can not ever remember there being any issues needing numbers to be input. Just use SPS and choose replace and program it.
go through sps. follow the steps. all the work is done for you
The “end model part number” will show in a module information data list even if a new module is installed, because the number lives in the module. Connect a scan tool first, go to your data list and view the module info. Either write it down or screenshot it. Then there’ll be a programming step where you select the correct number that is installed. Complete the programming and perform any
Hi Rudy, as already mentioned, it is pretty straightforward with the TEHCM # being internal to the module. Just follow the instructions and then finish up with the adaptives. With Gen 1 and Gen 2 6T40/45 series the RPO cannot be relied upon, since a 2012 could be either Gen 1 or 2. There are some notable physical internal differences between Gen 1 and Gen 2 transaxles, but very few reliable