Just tried to reflash and change VIN in a used ECM for 2010 Malibu, and GM SPS wouldn't let me change VIN. I did notice SPS now calls it ECM/TCM flash sequence now. I did read on drewtech and it said GM will only allow a reflash to VIN in used ecm, but will let you write a VIN and mileage to a clean ecm. Has anyone ran into this. I used to rewrite VIN in used ECM's.
Reflash used gm ecm/tcm
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It stopped with a box that said skip ecm, skip tcm, ok. When you click ok, it starts over. So i don't know. It wouldn't try to download at all. When I say reflash, I was only trying to change VIN. . The flash files were the same in both ECM's because customer had managed to find a exact duplicate ecm, but VINs were different.Comment
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With GM the VIN is usually rewritten as part of the flash. If you entered the correct VIN at the start of the vehicle identification process that is the VIN that will be in the ECM after the flash. If the correct software is already in the ECM a notification will come up saying "you are attempting to program with the same calibration, GM does not recommend this". Ignore this and do the flash and the VIN will change. Unless something has changed since I last installed a used ECM.Comment
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I think you will find it has changed. I never ran into a popup box that said " Skip Ecm, Skip Tcm" and only option was to click OKAY. Then SPS goes to section where it says "Cancel, Use same Vin, Use new Vin. " and wants to start over. I tried both options to "Replace and reprogram ecm: and also to just "reprogram Ecm. Both had same results. Customer ordered new ecm from dealer, I'll try it this afternoon. And I'll try some more with used ecm. Another thing Greasybob, it never popped up box that said you are attempting to reprogram with same code. I have seen that before and went right on passed that. This doesn't seem to be the same problem.Comment
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used module
GM has put a stop to a lot of used modules, they have some sort of seed and key set up. I have a list around somewhere with the models affected. They allow you to program but the theft will have an error. I think by 2011 the entire line was included. i can get a copy of the documents if anyone needs. Hope this helps.....Comment
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I don' think that a 2010 Malibu is a global platform vehicle. My list shows the Malibu joining that group in 2013. it sounds mor like the whole menu process has changed. I haven't flashed a GM in a month or so. I'll have to check it out later. I always save screen shots of what I'm doing when programming, that way if some thing changes or something new comes up I can review it later.Comment
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A link to the list of seed and key modules. http://www.sandyblogs.com/techlink/feb2010techlink.pdfComment
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Hi
im noob about programing reprograming for j2534, and i want to know about ramplece ecu with the same no. serial. Thank you !!Comment
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A link to the list of seed and key modules. http://www.sandyblogs.com/techlink/feb2010techlink.pdf
Reply With QuoteLast edited by Witsend; 12-22-2017, 02:42 PM.Comment
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