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Thread: heater tube connection leak

  1. #1
    trbolvr is offline Cadillac Owners Member
    Automobile(s): 2001 Deville
    Join Date
    Aug 2011
    Duluth, Mn

    heater tube connection leak

    Just fired up my 2001 Deville after headgasket/studding repair and noticed I have a coolant leak out of heater tube at crossover connection.

    Attachment 94469

    It is leaking out of connection point of item 1 and 2 in this diagram.
    Anyone know what the method of sealing is here? Oring perhaps? Thanks.

    BTW engine fired rite up and ran good

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  3. #2
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
    Automobile(s): 2002.5 F55 STS - 67,500 miles, 2014 Explorer XLT FWD
    Join Date
    Feb 2006
    MD Eastern Shore, Kent Island

    Re: heater tube connection leak

    GM quick connect with nylon snap fingers and O-ring. Replacement fittings on the Help! racks at large parts stores. Your diagram is correct.


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