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  1. Seville and Eldorado Forum
    So I have had bad luck with coolant for the past year. Constantly refilling reservoir. A little over a year ago I replaced the radiator, good for a while and then boom, a massive blowout of coolant one day. Turns out WP belt broke so replaced that. Then months later started losing coolant again...
  2. FWD DeVille 1985-2005, Fleetwood, and 60 Special
    I was driving and all of a sudden coolant started leaking out very quickly from under the dashboard on both the driver and passenger side of the vehicle. The windows steamed up completely. Should I suspect the heater core is at fault, or a hose?
  3. CTS First Generation Forum - 2003-2007
    My heater core is leaking and I’m trying to avoid replacing it entirely if possible. Someone mentioned using two tubes of Alumaseal would fix the problem but I wanted to ask around before I do something that damages my car permanently. Has anybody had success with radiator sealant? And if so...
  4. 2008-2013 CTS General Discussion
    I put together a diy video for the coolant pump and coolant outlet gasket. Let me know if you have any questions or comments.
  5. ATS General Discussion Forum
    2013 ATS 2.0T RWD standard trans So my worst fear came true and i botched my valve cover gasket replacement. In short the replacement went fine, no leaks from the valve cover itself but in doing so i must have cracked a hose on the back of the block. I am beyond frustrated, but i have stepped...
  6. Northstar Engines and System Technical Discussion
    Okay. I have come across several posts about a leaking coolant system. I just found my leak. Can anyone help me out with identifying this particular leak and maybe some pointers on how to fix it? I am including pictures on the area and the specific spot. Thanks.
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