Programming TCM

Rudy Technician California Posted   Latest   Edited  
Updated
Programming
2012 Buick Verano 2.4L (K LEA) 6-spd (6T40)

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?

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Justin Mobile Technician
Utah
Justin Default
 

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.

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Rudy Technician
California
Rudy Default
 

No. Asking before I start.

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Rusty Owner/Technician
Massachusetts
Rusty Default
 

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.

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Benjamin Diagnostician
Tennessee
Benjamin Default
   

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.

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Rudy Technician
California
Rudy Default
 

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.

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Benjamin Diagnostician
Tennessee
Benjamin Default
   

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.

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John Owner
New York
John Default
 

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

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Rudy Technician
California
Rudy Default
 

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.

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Danny Technician
Tennessee
Danny Default
 

you might be thinking of Ford where there a you need put in information for solenoid's

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Bill Owner/Technician
Michigan
Bill Default
 

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.

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Steve Diagnostician
Ohio
Steve Default
 

go through sps. follow the steps. all the work is done for you

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Daryll Diagnostician
Tennessee
Daryll Default
 

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

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Martin Instructor
British Columbia
Martin Default
 

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

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Rudy Technician
California
Rudy Update
 

Thank you all. As most of you said,there was no need to input anything. I simply followed the SPS directions and it went smoothly. Thanks again.

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