Mechanics

CHEVROLET BLAZER HEATER PROBLEM

2002 Chevrolet Blazer • 150,000 miles

My blazer is using water rapidly but is not overheating and I do not see a leak. There does not appear to be any additional smoke coming from anywhere and there is no water in the oil or oil in the water but the heater will blow hot air one minute and cold the next. What could be wrong please
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December 23, 2012.



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