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    4L80e 1987 C 10 ls swap not shifting

    I purchased from a guy Andy LSX specialties. He sent me the specs he used for the tune based on my trans and engine. I’m going to double check to make sure I’m getting power. Hoping maybe Nick can come check it out since he’s in Vegas also
  2. B

    4L80e 1987 C 10 ls swap not shifting

    Only codes I have are a misfire and knock sensors
  3. B

    4L80e 1987 C 10 ls swap not shifting

    I also ran a continuity test and there were no errors or issues.
  4. B

    4L80e 1987 C 10 ls swap not shifting

    I did what you specified. I didn’t feel any difference.
  5. B

    4L80e 1987 C 10 ls swap not shifting

    I also want to mention, when I fire it up and I shift into reverse or drive I do feel the shifts.
  6. B

    4L80e 1987 C 10 ls swap not shifting

    My harness is connected to the ECU and ecu to my transmission
  7. B

    4L80e 1987 C 10 ls swap not shifting

    RPM gauge
  8. B

    4L80e 1987 C 10 ls swap not shifting

    I’m not sure, it drives but as soon as it takes off it goes into high revs and my ROM gauge increases but no decrease.
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    4L80e 1987 C 10 ls swap not shifting

    Sorry I’m new here. I’m using a stand alone harness, I’m using the transmission from my other truck which was running fine before I did the swap. There’s no oil burning, or any burning smells. My oil level is good. Btw I did replace the ISS sensor but that didn’t change anything.
  10. B

    4L80e 1987 C 10 ls swap not shifting

    I’m using a stand alone harness, I’m using the transmission from my other truck which was running fine before I did the swap.
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    4L80e 1987 C 10 ls swap not shifting

    Another picture
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    4L80e 1987 C 10 ls swap not shifting

    Hey guys I need some help. I got a 6.0 with a 4l80e Btr stage 2 cam 799 heads Short headers Ls7 lifters Swap the trans to a 1987 Chevy c10 from 2002 Chevy Silverado 2500 I finally got it “running” I’m able to drive it but my transmission isn’t shifting. When I drive It does high revs the...

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