CTS Radiator question!
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Cadillac CTS First Generation Forum - 2003 - 2007 Discussion, CTS Radiator question! in Cadillac CTS Coupe, Sport Sedan and Sport Wagon Forums; Hey guys quick question on our common radiator transmission connection issue. Would just replacing our radiator be a good preventive ...
  1. #1
    Stuff_buster is offline Cadillac Owners Fanatic
    Automobile(s): 2005 CTS 3.6
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    CTS Radiator question!

    Hey guys quick question on our common radiator transmission connection issue. Would just replacing our radiator be a good preventive method of avoiding the dreadful transmission line failure or does everyone have to end up putting a external transmission cooler? The reason i ask is if we all have to end up putting a tranny cooler ill just throw one on before anything has a chance of happening, if not im just as happy to replace my radiator at the same time i replace my radiator fluid.

    Thanks guy!

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  3. #2
    ghettomike's Avatar
    ghettomike is offline Cadillac Owners Master
    Automobile(s): 03 CTS 3.2L (Sold) / 09 CBR 600rr /2014 GMC Sierra
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    Re: CTS Radiator question!

    go with a tranny cooler.
    when mine blew it was before all the threads were popping up, i remember reading only 1 before mine, so the external cooler wasnt even a thought at that time.
    i went with a aftermarket rad that my dealer sourced locally.

  4. #3
    Stuff_buster is offline Cadillac Owners Fanatic
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    Re: CTS Radiator question!

    thanks for the input! ill be working on it soon, better to do some work ahead of time rather then getting stuck on the road.

  5. #4
    Stuff_buster is offline Cadillac Owners Fanatic
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    Re: CTS Radiator question!

    Quote Originally Posted by ghettomike View Post
    go with a tranny cooler.
    when mine blew it was before all the threads were popping up, i remember reading only 1 before mine, so the external cooler wasnt even a thought at that time.
    i went with a aftermarket rad that my dealer sourced locally.
    Hey ghetto mike did your aftermarket rad provide a fix for the transmission cooler line fitting? if so i may just get a new rad

  6. #5
    ghettomike's Avatar
    ghettomike is offline Cadillac Owners Master
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    Re: CTS Radiator question!

    If you search my threads started you can find mine with a parts and price list.
    I changed the rad, lines and did a full tranny pan service (gasket /filter) and flushed the burnt fluid out by cycling the fluid a few times...I think the mechanic said he changed the fluid 3x just to be sure. (I'm well known @ that shop so it wasn't a extra charge)

  7. #6
    rb0757 is offline Cadillac Owners Member
    Automobile(s): Cadillac
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    Re: CTS Radiator question!

    it would be best to go with the external tranny cooler, heat is the number one killer of tranny so anything you can do to keep that fluid cool is the way to go, they are real easy to put in too

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