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Q: Heater problems again on 1995 Chevrolet 1500 Pickup

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First my heater only worked on high, so i changed the resistor. And it was working on all the speeds. Then I noticed that when i try to put it on defrost only or to change the settings it doesn't change, the heat just blows out of everywhere. About a month after we changed the resistor, I noticed the fan would work on all the settings except high. Now just a couple weeks ago it started to make a loud noise and it stopped working all together. You can hear it going but barely anything at all comes out of the vents. I let the truck run for about 45 mins and my windshield was barely defrosted.
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
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sounds like your blower motor. if it draws too much current, it will fry the resistor which could be the reason for multiple failures.

Roy
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