Do The 2006 and newer DTS Northstars have the same headgasket issues?
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Northstar Engines and System Technical Discussion Discussion, Do The 2006 and newer DTS Northstars have the same headgasket issues? in Cadillac Engine Technical Discussion; My engine block in my 2000 has had a crack now for 3 years..This year it seems to be getting ...
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    postman2000's Avatar
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    Do The 2006 and newer DTS Northstars have the same headgasket issues?

    My engine block in my 2000 has had a crack now for 3 years..This year it seems to be getting worse..Have to add more and more antifreeze..Im debating whether to fix this engine or just get another car..My question is this..Do the 2006 and newer DTS's have any issues with the head gaskets or head bolts...or any other common failures that I should be aware of?

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    Ranger's Avatar
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    Re: Do The 2006 and newer DTS Northstars have the same headgasket issues?

    Do the 2006 and newer DTS's have any issues with the head gaskets or head bolts
    Not that I have heard of. Seems like there have been very few since the thread pitch change in '04.

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    Re: Do The 2006 and newer DTS Northstars have the same headgasket issues?

    So in theory if i found a really clean 2005 i should'nt have to worry too much about the head bolts pulling? I personally like the 2000 - 2005 style better than the 2006 and newer..Thanks Ranger..

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    Re: Do The 2006 and newer DTS Northstars have the same headgasket issues?

    Yes - just replace the coolant regularly and you wouldn't deal with the gasket/bolts problem anymore.

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    JoeTahoe is online now Cadillac Owners Fanatic
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    Re: Do The 2006 and newer DTS Northstars have the same headgasket issues?

    I have a friend that bought a 2005 deville and it did have a pulled head bolt now it has jakes studs in it. Had around 130000 on it. It is also a auction car. This was this last spring. But it is the only one I have ever seen or herd of so far

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    Re: Do The 2006 and newer DTS Northstars have the same headgasket issues?

    Wow a 2005 with a head bolt problem..That sucks..I dont know what to think now..

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    Quote Originally Posted by postman2000 View Post
    Wow a 2005 with a head bolt problem..That sucks..I dont know what to think now..
    Could've been due to poor maintenace, don't get paranoid

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    Re: Do The 2006 and newer DTS Northstars have the same headgasket issues?

    Quote Originally Posted by postman2000 View Post
    So in theory if i found a really clean 2005 i should'nt have to worry too much about the head bolts pulling? I personally like the 2000 - 2005 style better than the 2006 and newer...
    You should be able to extend your search to include the 04 model year now that we are able to determine which 04's have the same head bolts as an 05.

    http://www.cadillacforums.com/forums...ead-pitch.html

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    Re: Do The 2006 and newer DTS Northstars have the same headgasket issues?

    While researching inserts for my son's 2001 Deville with a failed H/G, I was told that there has been some demand for 2004 and 2005's. Not good news.

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    ... we have not seen many pulled head bolts on the 2004.5/2005+ redesigned bolts ((one or two maybe)

    there have also been a handful of true headgasket failures ... in these cases we have not studded the block and have not had any problems with those cars since
    (seems like a very low headgasket failure rate to me...)
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    Re: Do The 2006 and newer DTS Northstars have the same headgasket issues?

    That is very good to hear.

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    Re: Do The 2006 and newer DTS Northstars have the same headgasket issues?

    Hey Chris, Do you know of any headgasket or head bolt problems on any 2006 or newer DTS that have come into your dealership? Also do the 06 and newer DTS have any other major problems of their own that you are aware of? I thank you for your time...

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    RippyPartsDept's Avatar
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    Re: Do The 2006 and newer DTS Northstars have the same headgasket issues?

    We've seen a few gasket failures but no bolt failures
    as I said earlier, we've seen a couple bolt failures on 2005's (which should have the same bolt design as the 2006+)
    well they're not bolt failures like the previous designs where they would pull out
    these are loose bolts (which probably has to do with the gasket failures)

    i'm not sure if they're backing out or if they were always loose and it was a factory build problem
    but it's not really that many - I just checked the sales history and we've done 5 in the last 24 months

    besides lower block seal leaks (which are also greatly reduced with the new N* design) i can't really think of anything else that is common at all
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    Re: Do The 2006 and newer DTS Northstars have the same headgasket issues?

    Quote Originally Posted by RippyPartsDept View Post
    I just checked the sales history and we've done 5 in the last 24 months
    So the 5 sales in the last 24 months would be on the head gasket kit # 89017600 that is used on the following cars...

    - 04-05 Deville
    - 06-11 DTS

    For comparison could you share 24 month usage on head gasket kit # 12564795 that is used on the 00-04 N*.

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    Re: Do The 2006 and newer DTS Northstars have the same headgasket issues?

    yeah, i thought to do that yesterday but was a bit rushed

    12560633/12560632 - 19 repairs in 24 months (1993-1999 N*)
    12564795/12564796 - 26 repairs in 24 months (2000-2004 N*)
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