Transmission Replacement HELP NEEDED PLEASE! !

Discussion in 'GM Powertrain' started by laramik, May 21, 2009.

  1. laramik

    laramik New Member

    Also posted this in the Suburban section.

    I have a 1999 Chevy Sub 2wd, with the 5.7 . Trans stopped shiftin into third and OD about a month ago, so I bought some sea foam and it cleared up right away. Well, that lasted about a month til I started slipping into every gear and by this week was barely driveable. I picked up a used trans from a salvage yard that was told to me to be out of a 2000 silverado 2wd and was labeled to be a 4l60e per the receipt. I dropped it off at a local mechanic just to make the swap and here comes the problem, he tells me that this trans doesn't fit. Says its shorter, and doesn't have all the same spots for things to fit on it, he thinks it looks just like a 700r or something. This is my only car and I have a family of five, I don't have the money at all to buy another one, and the salvage yard is telling me that it is a 4L60e and from what I believe to know, this should fit? Is my mechanic wrong, I definately do trust him, but he is not a trans guy, or is it possible that the salvage yard sold me the wrong trans. I REALLY need help on this guys, what should I do?????? I'm quite handy and have rebuilt small engines before, should I just order a rebuild kit myself for 150 and resell this trans? Or is there a way to make this fit? PLEASE HELP!
  2. grimreapersshadow

    grimreapersshadow Rockstar 100 Posts

    there's a good chance salvage yard sold ya the wrong one you probably have an 4L65e if you can see the trans bell housing does it look like it unbolts from the main housing and does it have fins on the side? does your broke one look the same you proalby have a 1piece case 4L60e if its not a one piece then you might have the 2 piece 4L60e and thats the correct one you need pretty much any thing after 99 gm used 4L65-e trans unless you have an van model :p
  3. Bigon37

    Bigon37 New Member

    Look on the side of the trans you picked up, you should be able to see GM 4L60E casted into the main housing. You can have your old trans rebuilt if your not sure about a used one. That would be the safe way to go , the used trans may have internal damage that can show itself as soon as it's installed or 50 miles down the road.
    Last edited: May 22, 2009

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