1989 Chevy Silverado Heater Not Working

Tiny
STEVE350
  • MEMBER
  • 1989 CHEVROLET SILVERADO
  • V8
  • 2WD
  • AUTOMATIC
  • 112,000 MILES
Hi, I recently replaced the intake manifold gaskets on my pick up, it was leaking water into the exhaust and there was little or no heat. The leak is fine maintaining a full radiator, replaced the thermastat at the same time. Still there is no heat. Blower works, cold air. When you switch it from cold to hot you hear the crossover motion but temp stays cold. Appreciate the advice.
Steve
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Wednesday, January 7th, 2009 AT 3:54 PM

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Tiny
DE772601
  • MEMBER
Hello well if you still have no heat you have a clogged heater core and to check to see how take both heater hoses off at the fire wall and take a garden hose and spray in the heater core until the water is clear and then repeat the process on the other one. This should clean out the ports so you can get heat again. I hope this will help you.
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Wednesday, January 7th, 2009 AT 5:55 PM

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