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05-13-2018, 09:47 PM
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#5 |
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Registered User
Join Date: Oct 2011
Location: Las Vegas, NV
Posts: 292
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Re: 6l80 questions
The ECU and tcm need to have matching operating systems. The best way to do this is with gm tis reprogramming service. Hptuners can do a full tcm flash as well but you need the right operating systems. I can help if you haven't resolved the issue yet.
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