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transmission wireing problem

This is a discussion on transmission wireing problem within the Automatic Transmission forums, part of the Drivetrain category; i recntly installed an ls motor and auto tranny in my 55 chevy useing orig wireing harness but only used ...

  1. #1
    Junior Member
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    black
    1955 belair

    transmission wireing problem

    i recntly installed an ls motor and auto tranny in my 55 chevy useing orig wireing harness but only used the ign hots and fuel pump wire, my problem is my tranny does not shift it's like it's in 2nd gear, the local tranny shop it may not have fire to the trans but i don't know what wire is for what on the tranny plug any help would be greatly appreciated, it's the only thing keeping me from driving my new projct, thanks

  2. #2
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    hey did you get any help yet?? I can get that info on monday.... your in thrid gear hope this helps..Dave

  3. #3
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    black
    1955 belair

    just talked to a guy who had same prob.he said vehicle speed sensor has to have speedo reading he said he had to buy a electric speedo from autometer,said there may be easyier fix now that was a few years ago, thanks

  4. #4
    Moderator Cutlass's Avatar
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    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    Terminal E...a red wire at the transmission connector needs power with the key on.



  5. #5
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    1955 belair

    thanks, for the info it gives me something to go on, thanks

  6. #6
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    1955 belair

    terminal e on my connector is pink?

  7. #7
    Moderator Cutlass's Avatar
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    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    Is it possibly a red wire that has faded to pink? Are you using a 4L60E transmission?

  8. #8
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    1955 belair

    i'm useing a 4l80e and term e on mine is pink so i checked my pickup truck with an 4l60e and it was pink and it was hot with the key on so i put power to the pink wire on mine an now my tranny works fine but my plug has 2 red wires one solid and 1 with black stripe that were not hot with key on ?, autometer says that gm changes wire color from car and truck to different years, but anyway thanks for the info i didn't know where to start without it

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