GM Module "Divorcing"

Joseph Technician South Carolina Posted   Latest  
Discussion
Programming
2020 Chevrolet Silverado 1500 Custom 5.3L (F L82 Gas) 8-spd (8L90)

This might be old news for some and I've seen this feature mentioned being avalible in the EU, but I haven't seen it in US SPS before so I thought I would post about it. Not that it would be extremely helpful unless you had the car you were pulling it off of but it's there. (At least for now)

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Interesting
David Engineer
Michigan
David
 

I wonder how this is performed when component(s) are pulled from vehicles in the junk yards,... oops recycling centers. If the module(s) is not "divorced" from the donor vehicle, will the recipient vehicle have issue installing to the PCM/BCM?

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William Technician
West Virginia
William
   

You are not supposed to swap a Global A module anyway… Unless you have the correct equipment like an I/O terminal and it doesn't work on every Global A module. Now, forget swapping modules on the new VIP architecture (global B platform).

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Michael Technician
Indiana
Michael
   

William , In what instance would you use that “prepare module for removal” procedure? I don't get it, they have told us swaptronics is a thing of the past (global A and VIP). Is it like a ford doing a PMI? Thanks in advance.

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William Technician
West Virginia
William
   

So, it is basically a 2 part procedure, the first part of the procedure is an inhale of old module data (aiding in new module installation), the second is the divorcing which is explaining to the other modules that a new module will be installed and not trip the security feature built into the vehicles other modules (mainly the BCM as it is the keeper of the environmental identifier).

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Thanks
Helpful
Interesting
Martin Instructor
British Columbia
Martin
   

Michael. “Preparing a module for removal” is used to gather necessary data from the old module that is to be transferred to the new module, that cannot be learned by a procedure. A simple example might be a Power Steering Control Module, which tracks worm gear counter information, to keep track of wear on the steering system. If that data is not able to be captured from the old module, an…

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Thanks
Joseph Technician
South Carolina
Joseph
 

Yeah, it probably won't do us any good here in the aftermarket, Or “Gently Used” parts and I doubt it will last long. If I were to guess it's probably enabled here due to the chip shortage they might have to pull modules off of cars in the lot for warranty purposes.

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William Technician
West Virginia
William
   

We can't use a used module for a warranty job anyway because it will not work for one and GM will not let us do things like that. The cars just sit until parts are available.

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Ghislain Owner/Technician
Quebec
Ghislain
 

This is the same procedure that the SAAB used. Remove and add a unit on the network Ghislain

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Timothy Owner/Technician
Wisconsin
Timothy
 

Not the same thing as a ‘divorce’ procedure. That procedure essentially allows replacement of the module from a vehicle, so it can be installed in another vehicle. No such thing exists in our world…the others have already explained what the ‘Prepare thing’ means…You even have to prepare a vehicle for a VTD module on older Cobalts when you replace them…

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