1997 Chevrolet Tahoe Q&A

1997 Chevrolet Tahoe Question: heater blows cold

i forgot i also change the heater control valve it worked great for a few days then started blowing cold again -
Answer 1
check for full of radiator fluid (low fluid = no heat), if full may need new thermostat - you can check the old one by placing in freezer till cold and run under hot water and watch to see if it opens -
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