Question about 1995 Cadillac DeVille

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Cool air coming from my 1990 deville changed raditor and therm. still luke warm.

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Try backflushing the heater core,remove heater coolant hoses and flush both ways with a garden hose,do you have a air compressor ,blow water back through heater core both ways,this asuming that all valves are working allowing coolant to flow and all air doors in car are opening,if so this fix has worked many times for me in older cars note works better to hook water hose to hoses or a short peice of hose on heater core,good luck

Posted on Oct 01, 2010

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Posted on Jan 02, 2017

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