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  1. A

    4L80e no reverse

    I opened it up. The carrier was messed up and so was the band.
  2. A

    4L80e no reverse

    I pulled the auto out of my truck today. I think I might open it up today. The dip stick was like the last thing to come off. I dont know it was a pain. I think I should have pulled it off before taking the transmission away from the motor. I might have damaged some things bringing the 4l80e...
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    4L80e no reverse

    Ok that sucks that happened to your TH400. I dont really know much about transmissions. I might start pulling one from a junkyard. I looked on rockauto and a new rear/reverse band is under fifty dollars. They do not sell the Reaction Carreir drum thing though. I feel like you would think that...
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    4l80e questions!!

  5. A

    4L80e no reverse

    Anyone know if the band gets messed up if that means the drum it grabs gets messed up to?
  6. A

    4L80e no reverse

    I have never disassembled a transmission before. I have done clutches in manuals. That fix worked for a few hundread miles. I am currently thinking reverse is out because of a worn band or maybe a leek in the transmission. I think leek maybe because there might not be enough fluid pressure to...
  7. A

    4L80e no reverse

    Check out rear servo pin weld on youtube
  8. A

    4l80 interchange question please

    I recently got a 1991 GMC dually and it shifted fine but did not go into reverse. Me and my girlfriend got it working by welding 1/8 inch onto the rear servo pin. It is not to hard but you have to take a lot of the same size bolts out (most) to drop the valve body to get the pin out.

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