heater is not blowing hot

2000 CHEVROLET S-10
37,000 MILES
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TONYBUM13
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2000 Chevy S-10, 4.3L, heater blowing luke warm air, new thermostat, just back flushed core, all controls seem to b working properly, any suggestions?? Thanks.
Jan 4, 2012 at 3:24 AM
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TONYBUM13
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Heater hoses-1 is hot and one is cool, but back-flushing core resulted in air moving freely n both directions!!
Jan 4, 2012 at 3:26 AM
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ASEMASTER6371
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heater core needs to be replaced. not enough is flowing.

Roy
Jan 4, 2012 at 3:38 AM
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TONYBUM13
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Hoping it wasnt that,but oh well, could low coolant have anything to do with it??
Jan 4, 2012 at 3:45 AM
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ASEMASTER6371
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yes it can. make sure it is full and re check.

Roy
Jan 4, 2012 at 3:56 AM
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TONYBUM13
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Ok will do, thanks a lot for your time, much appreciated!
Jan 4, 2012 at 3:59 AM