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what rear end do i have in my truck

Discussion in 'GM Powertrain' started by bmwlover918, Jul 14, 2011.

  1. bmwlover918

    bmwlover918 New Member

    new here i just made the drive from california to ohio back in december unfortunately my truck was having major issues with having an open diff. my truck is a silverado 2004 2500 lt (not an hd) 2wd 3.73 gears and it has 8 lug bolts my question is what is my case size housing so i can get a lsd or airlocker

    TELORVEHC Rockstar 4 Years 1000 Posts

    Hmmm...since it's not an HD I'm gonna say a GM Corporate 12 bolt.
  3. Bigg Ron

    Bigg Ron Rockstar 100 Posts

    Welcome to the Club!!
    Best to look at your RPO codes in the glove box, the look on line for the RPO code list, here is a link.
  4. Crawdaddy

    Crawdaddy ↑↑↑ Has no life Staff Member 5+ Years 1000 Posts Platinum Contributor

    It should be a GM Corporate 14-bolt. Does the hub of the axle stick through the center of the rear tires, or is it flush with the face of the tire? If the hub sticks through, you have the full-floater version, if it's flush, it's the semi-floater version.

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