01 Heater doesn't heat

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January 4th, 2010, 7:05 PM

Mickbear76

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01 Heater doesn't heat

Hello- My 2001 Siverado 1500 heater is acting up. A year ago I flushed the heater core when this happened. The heater doesn;t blow hot air....it gets luke warm and warm enough to get defrost the windshield but not comfortable to drive. Does anybody know if these heater cores have a tendency to "gunk" up after an initial problem? Or could it be anything else? Thanks!!!

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January 4th, 2010, 9:30 PM

MDTAHOE

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Once it clogs for the first time it is prone to happen again. Is the temperature gauge reading hot? If not you may need a t-stat.

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January 5th, 2010, 5:01 PM

Mickbear76

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Temp reads normal. I put a new t-stat in about a year ago. Looks like it may be a long night in the garage so I don't have to deal with another cold MN morning

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