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  1. C

    5.7L engine replacement 97 tahoe

    Thanks for the info, I'll take it in and have it checked out. I'll post an update once it's figured out
  2. C

    5.7L engine replacement 97 tahoe

    Ok, my scanner doesn't show that much data. So I'm in the dark there. It's a cheaper autel. Not anything special. Just shows OBDii codes and basic descriptions
  3. C

    5.7L engine replacement 97 tahoe

    Nope, my scanner isn't picking up any codes, no data stored and all sensor status' are OK
  4. C

    5.7L engine replacement 97 tahoe

    3rd gear, on the upshift. After your in 3rd and cruising it will do it here n there.
  5. C

    5.7L engine replacement 97 tahoe

    And it doesn't do it constantly its on and off
  6. C

    5.7L engine replacement 97 tahoe

    So as far as killing the power am I able to just unhook the battery or do I need to unhook the pcm directly? If so ive done this a couple times and so far no change. The best way I can describe what it is doing is. When you come out of a corner and accelerate to lets say 45 as soon as it shifts...
  7. C

    5.7L engine replacement 97 tahoe

    Yes and yes, same engine specs. It's a direct replacement. I ask because everything runs smoothly break in went good but it is showing symptoms of a bad ECU. It isn't throwing any codes but jerks a hair on an up shift. Just fixed this problem in a van by replacing the fried ECU. Wanted to make...
  8. C

    5.7L engine replacement 97 tahoe

    Do I need to reprogram the ECU after putting in a new motor? Replaced the 5.7 with a reman longblock.

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