Lower Crankcase Reseal

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Northstar Engines and System Technical Discussion Discussion, Lower Crankcase Reseal in Cadillac Engine Discussion; I had the dreaded lower crankcase reseal done on a 2000 Deville DHS with 4.6 V8 in December of 2004. ...
  1. #1
    wecampbe is offline Cadillac Owners Member
    Automobile(s): 2000 Devile DHS
    Join Date
    Sep 2005
    North Carolina

    Lower Crankcase Reseal

    I had the dreaded lower crankcase reseal done on a 2000 Deville DHS with 4.6 V8 in December of 2004. Done by a local Cadillac dealer for $1800+ with 12 months or 12000 mile warranty. Had crank position sensors replaced in January of 2006 and had small oil leak coming from front of the oil pan and running down and coating the bottom of the pan. Dealer says warranty is expired and nothing they can do. What kind of results have other members had with this repair lasting longer than 1 year and more than 11,400 miles.

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  3. #2
    parts68 is offline Cadillac Owners Fanatic
    Automobile(s): 02 Escalade,96 Aurora,with Shelby engine
    Join Date
    Jan 2006

    Re: Lower Crankcase Reseal

    Call GM customer service on this
    Sometimes they are sympathic and generous.

  4. #3
    sts96 is offline Cadillac Owners Fanatic
    Join Date
    May 2004

    Re: Lower Crankcase Reseal

    I have never had a replaced lower pan seal or oil manifold leak even 3-4 years later. You may want to check for pan bolt tightness (gently they strip easily) clean the front of the engine so you can identify the leak for sure.

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  6. #4
    Zorb750 is offline Cadillac Owners Connoisseur
    Automobile(s): 1997 Eldorado, 2003 Audi RS6
    Join Date
    Apr 2005
    Oakland County, MI

    Re: Lower Crankcase Reseal

    I doubt it's the case seal again. It may be the crank position sensor itself, a main seal, something like that. Perhaps the front engine cover is loose. The case halfway seal would be toward the bottom of my list.

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