Sierra 1500 heat blows cold air
#1
Sierra 1500 heat blows cold air
I have a 2001 sierra 1500 ext cab. Just recently had the coolant system flushed and now the heat is blowing cold air every so often. Not too sure what it could be. Anyone have any suggestions or have had the same issue?? I was thinking maybe the thermostat??? What do you think??
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