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Which Duramax?

Discussion in 'Chevy Trucks' started by sdplowing, Mar 14, 2007.

  1. sdplowing

    sdplowing Senior Member
    Messages: 108

    I have an '04 2500 with the Duramax. Is it an LB7 or the LLY? Will the code be on the little sticker in the glove box?

    Thanks
    Sean
     
  2. OhioPlower

    OhioPlower Senior Member
    Messages: 440

    look at the 8th digit in your VIN number. If it is a 1 you have a LB7. If you have a 2 its a LLY.
     
  3. jryden145

    jryden145 Member
    Messages: 86

    Or look under the truck, at the exhaust. If it has a catalytic converter, then its an lly if not lb7.
     
  4. 02DURAMAX

    02DURAMAX PlowSite.com Addict
    Messages: 1,229

    Your truck should be an LLY Duramax, But i may be wrong.
     
  5. rcpd34

    rcpd34 Senior Member
    from MD
    Messages: 670


    LLY came out the second half of 2004.
     
  6. sdplowing

    sdplowing Senior Member
    Messages: 108

    Thanks for the input.:drinkup:

    Sean
     
  7. Lawn Care Plus

    Lawn Care Plus Senior Member
    Messages: 135

    This VIN number does not make any sense to me.

    I have an 07 old body style and the 8th number is neither a 1 or 2. It is "D".

    BTW - which one does one really want. My Duramax seems to have plenty of power.

    Tim
     
  8. sdplowing

    sdplowing Senior Member
    Messages: 108

    I don't know if there is much difference between the two. I just wanted to know which I had as far as aftermarket parts because apparently there is a difference.
     
  9. Lawn Care Plus

    Lawn Care Plus Senior Member
    Messages: 135

  10. hemisareslow

    hemisareslow Member
    Messages: 32

    LOL THATS BECAUSE YOU HAVE NEITHER THE LB7 OR THE LLY....LBZ RIGHT?
     
  11. hemisareslow

    hemisareslow Member
    Messages: 32

    THERE IS A BIG DIFFERENCE WHEN GETTING PARTS LIKE TUNERS AND COMPUTER UPGRADES...THE LLY HAS MORE HP AND TQ THEN THE LB7