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Oil leak from back of engine.

Discussion in 'GM Powertrain' started by toothnet, Jul 4, 2010.

  1. toothnet

    toothnet New Member

    Recently took 2004 duramax in for oil change at Chev. dealership. Guy says I have an oil leak coming from the back of the engine...they can't tell exactly where until they get in there...could be several hundred dollars to over a thousand. Anyone had this before or know what they are talking about. I don't know anything about engines so I'm curious.
  2. silverado00

    silverado00 New Member

    most likely rear main seal. Have to pull trans to replace.
  3. Gatorfan71

    Gatorfan71 New Member

    Yeah sounds like a main leak too.
  4. murdog94

    murdog94 Epic Member 5+ Years 5000 Posts

  5. k.daddy1

    k.daddy1 Rockstar 100 Posts

    Just like a Doctors diagnosis. Dealerships are known to lie, just to get some business for there employees. Take it to another reputable shop and get a second opinion. If it is a leak from the rear main, the cost will be over 1k. At least it is around the Ky/Tn area.
  6. jlwz71

    jlwz71 New Member

    Very good advice.

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