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2000 Chevrolet Blazer LS 2dr

2000 Chevrolet Blazer
Trim Info:
Rear Wheel Drive, 2 Door
17 mpg city / 23 mpg hwy
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January 25, 2011, 4:45 pm

AutomotiveForums M

Question: My heater/ac blower sometimes will not turn on.

sometimes my fan blower does not turn on and them after driving on highway speeds with the knob in the on position it will just spuratically turn on. I noticed today for the first time after experiencing this problem for about a month that the temp gauge started moving up high and back down to normal. once when this happened the heat went from warm to cold and then back to warm. What could be my problem? is my thermostat going bad? what could be causing my fan blower to sometimes work and sometimes not work?

November 2, 2011, 4:44 pm

AutomotiveForums M

Thromstates could be sticking and then unsticking, low antifreeze levels too can cause this to happen. As for the fan, the blower might be going bad, Mine squeeled for a while before it went on a very cold day.

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