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  1. #1

    Default Oil leak from back of engine.

    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.
    2004 Duramax, 4" Tuff Country EZ-Ride Suspension Lift,
    Toyo Open Country MT tires
    2007 Cadillac Escalade, 20" Proxes S/T tires (Wifes)
    2008 Cobalt 222 Boat

  2. #2

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    most likely rear main seal. Have to pull trans to replace.
    2000 Chevy Silverado 1500 Z71 5.3l. Crappy 4l60e..
    8in skyjacker tsl 33's

  3. #3

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    Yeah sounds like a main leak too.

  4. #4
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    Default

    Quote Originally Posted by Gatorfan71 View Post
    Yeah sounds like a main leak too.
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    Mike

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    1997 Chevy S-10 Blazer 4X4 with 330K miles and counting (Hunting rig).

    2009 Saturn Aura XE (wifes car)

    2011 F-150 Crew 4X4

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  5. #5
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    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. #6

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    Quote Originally Posted by k.daddy1 View Post
    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.
    Very good advice.
    1999 Chevy Silverado XC/SB Z71 - Comp Thumpr, Yellow LS6 Springs, 04 injectors, TR Pushrods, P&P Heads,Flexalite Fans, !Cats, !EGR, HPTuners, Thorleys, Dynomax Catback, Airaid, TCI 3000, Transgo w/ Vette Servo n Pinless Pistons, Tru-Cool, Helo 18x9 w/ 285/65/18 Nitto, Stainless Brake Lines, Hydroboost, Hawk pads, Ford Keys, exterior and interior mods, big stereo, less than 12,500 original miles.
    2005 4wd Colorado (work truck)

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