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2008 gen iv 4l80 swap
I have just completed a swap on a 2008 Sierra . Removed the 5.3 and 4l80 and replaced it with a ly6 6.0 and 4l80. I used the adapter harness from ICT Billet and have everything running.
So this is my question. I see the only gen 4 6.0/4l80 combos were in 08 and 09 express vans. I cannot find a file in the repository that matches my OS. What are my options? My ecu os is 12617631 and my tcu os is 24239927. Any ideas? Thank you.
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The TCM OS has to match to do a segment swap, not the ECM OS. Use the 2008 Express 4.8L/4L80 repository file, it has TCM OS 24239927.
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^^Yep, what he said for the 80E segment.
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Thanks guys! Worked great.