2001 Chevy Blazer My heater blows cold air

2001 CHEVROLET BLAZER
81,548 MILES • 6 CYL • 2WD • AUTOMATIC
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KDLATTURE
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  • 1 POST
My heater blows cold air. It has water. It has antifreeze. The gauges are not telling me it's overheating. Everything runs ok but the heater blows cold air. What do I check?
Mar 2, 2008 at 3:55 PM
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RASMATAZ
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  • 75,992 POSTS
Replace the thermostat, check the coolant level then report back
Mar 2, 2008 at 4:03 PM