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2001 chevy 3500HD Rear End

Discussion in 'Chevy Trucks' started by mriss, Nov 18, 2002.

  1. mriss

    mriss Junior Member
    from 35958
    Messages: 2

    I have a 2001 3500hd with a 6.5 diesel and would like to install a limited slip differential. I am having trouble identifing which rear end I have. I believe it to be a dana 80 but it dosen't have the 6 or 8 bolts to hold the axle in. Instead it has only 5 small bolts which removes a round cover. Behind the cover it appears there is a lock nut. Can anyone tell me what this is and how to get the axle out? thanks for any help.
  2. paul soccodato

    paul soccodato Senior Member
    Messages: 430

    are you sure its not a 10.5"14 bolt?
  3. mriss

    mriss Junior Member
    from 35958
    Messages: 2

    No, its a 10 bolt and matches the picture of a dana 80 perfectly. The only difference I see is the way the axle is held in.
  4. sonjaab

    sonjaab PlowSite.com Addict
    Messages: 1,425

    MR....check your glove box for the service RPO codes.
    Then go to www.gmforums.com
    They have a RPO decoder link......Then you can find
    out which axle and ratio you have.............geo
  5. Kurt B.

    Kurt B. Junior Member
    Messages: 29


    Please let us know how this project goes. I have a couple of the same trucks and the same thought has crossed my mine. I've done fairly well without the locking diff. on these trucks and always figured the cost and the trouble wouldn't be worth it. I can testify to the fact that it would come in handy on grades but must area's we work on are flat and as long as we don't stop and lose momentum we don't have a problem.