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Old 08-07-2009, 01:33 PM   #22
j cAT
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Re: 00' Silverado no heat

Quote:
Originally Posted by slvbeard View Post
I have a problem where the temperature gauge goes up above normal, and the heat gets cold. After about a minute the temperature gauge goes back to normal and the heat gets warm. I replaced the thermostat and it seemed to work fine for about a month, but now it's doing it again.
flush out the heater core..remove hoses at engine
flush the core out with a water hose into a bucket,,,if its black goop your gonna have to somehow cleanout all of the coolant system ..

dexcool and distilled water only....mixing of other coolants will goop up your system...
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