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Thread: 411 pcm update to 4L80e

  1. 01-10-2019 #1
    redheartbeat
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    411 pcm update to 4L80e

    I had a perfectly good running truck with a bad 60e so I updated the trans to an 80e and did a segment swap. I rewired the trans wiring and added the front sensor. I did an entire write download. Now I have a severe miss and the tuner software says P01 ECM, GM Gen 3 V8, 4.3L V6. Operating system 12212156. I had updated the tuning software right before the segment swap. Could I have done something wrong? I had used this PCM in the the same exact truck running a 408/80e combination and didn't have issues before. Why does it say 4.3L V6? The truck has a 4.8L v8 from a 2006 with 2002 Camaro baseline tune loaded, has been running correctly for years.
    Last edited by redheartbeat; 01-10-2019 at 08:34 PM.
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  2. 01-10-2019 #2
    5FDP
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    It says V8 before the 4.3 V6, meaning that computer and operating system was used on both V6 and V8 trucks.

    Nothing is wrong with what is saying.

    If you feel something isn't right with the tune, just redo it and try again. That is about as easy as I can explain it right now. Take your old file, apply the 80e segment swap again and do a write entire again.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.
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  3. 01-10-2019 #3
    redheartbeat
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    Tried three times, now. Very strange. Have not tried it with the beta software, yet.
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