did u use any flushing additives.. prestone makes one thats pretty good.
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I may be doing this at some point in the next month or two. How much time would you say it took? I've taken dashes apart before but that was at the dealership where I had some extra tools and an extra hand when needed.
see and you wanted to part the car out and say bye bye, after bleeding, and leaking your still good
what about the heater hose nipple assembly on the engine itself? could that be clogged? I'm going to check this out tonight.
that was it! i disconnected both heater hoses from the engine. then forced about 40psi of air back through the return side on the engine. the return was also clogged.
now there is hot air!
GTPINSC - Thanks for the pics! I have to do my heater core on my 99 Grand Prix. You just saved me a whole lot of trouble investigating how to take apart the puzzle! Many thanks!
RANDYBILL - Good suggestion on flushing the system before installing the new core. I would have never thought about that.
I have a long list of fixes on my 99. Power windows, heater core, power mirrors, power sun roof. That’s just what I know about. Oh yeah, the radio was just shoved into the dash and is not connected to anything.
I will post photos of my tear down and repairs as I make progress (or cause more irreparable damage) to help aid others as well.
Thanks again man!
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