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Thread: Front diff leaking

  1. #1
    CaddyEscalade is offline Cadillac Owners Fanatic
    Automobile(s): Escalade
    Join Date
    May 2010
    Posts
    231

    Front diff leaking

    It would appear my front differential is leaking oil, it is not coming from the drain or fill plugs. Must be a seal? Is this common? Is it a tough job to fix? I am not liking the look of this.


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  3. #2
    Join Date
    Sep 2007
    Location
    Wilmington, NC
    Posts
    13,969

    Re: Front diff leaking

    axle seals leaking is pretty common... they are pretty cheap too

  4. #3
    CaddyEscalade is offline Cadillac Owners Fanatic
    Automobile(s): Escalade
    Join Date
    May 2010
    Posts
    231

    Re: Front diff leaking

    Is it a tough job to do?

  5. #4
    Join Date
    Sep 2007
    Location
    Wilmington, NC
    Posts
    13,969

    Re: Front diff leaking

    i truly don't really know... i just sell parts ... i barely work on my own car... well i do my own oil changes sometimes... i would assume that if you have the tools and are mechanically inclined that it isn't that hard... but i could be wrong...

  6. #5
    CaddyEscalade is offline Cadillac Owners Fanatic
    Automobile(s): Escalade
    Join Date
    May 2010
    Posts
    231

    Re: Front diff leaking

    I did a search and found a few others with this problem, but no diy repairs that I can find. Hopefully one of the mechanics on here can help out to point me in the right direction.

  7. #6
    JBoesch is offline Cadillac Owners Member
    Automobile(s): 2005 Escalade
    Join Date
    Mar 2011
    Location
    Alabama
    Age
    53
    Posts
    4

    Re: Front diff leaking

    Hey guys,

    Yes. Leaking axle seals are very common. However, what also is common on front differentials are the "side differential bearings" failing. When these begin to fail the metal particals have a grinding effect on the seals.

    GM has had this issue on all AWD SUVs and not limited to our Cadillacs.

    I had my front diff done by someone who said they did them all the time. I let him do the repair and he only replaced the diff side bearings. I asked him how the other bearings looked and his reply was "fine." Needlesstosay, the pinion bearings are now bad and I am sure the axle bearings are bad as well. NOTE** If you are going to do it...do it right and have all bearings replaced and have the axles inspected for wear. You can rebuild the entire front diff, including new axles for around $1,000.

    I spent $500 on the first repair I know that I will do it properly the next time to prevent doing it again.


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