2003 Chevy S-10 The heat has quit

2003 CHEVROLET S-10
85,000 MILES • 6 CYL • 4WD • AUTOMATIC
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We have a 2003 chevy S-10 that the heat has quit working. It just blows cold air. The temp gauge get up to about 190 degrees but it just blows cold air. I put in a new thermostat but that did not help. Any ideas?
Nov 10, 2008 at 6:11 PM
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JACOBANDNICKOLAS
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Hi
Under the hood, there are two heater core hoses. One is an inlet and one an outlet. With the engine running at normal operating temp and the heater on, check both hoses to see it they are hot. If one is hot and the other isn't, there is a problem with the coolant flowing through the heater core.

Let me know what you find.

Joe
Nov 10, 2008 at 8:49 PM