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Check for 12V at the blower motor connection with ignition on and while selecting all blower speeds with fan switch. If you have power with all speeds at that connection you probably have a bad blower motor. If you don't have power there with any speed selected you probably have a faulty fan switch. If you have power there with only some of the speed selections you probably have a bad speed resister. If you power there at all speeds but high you probably have a bad high speed relay.

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โˆ™ 2014-02-03 14:09:06
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Q: If its not the fuse how do you figure out why the heater fan stopped working on your 95 GMC Sierra 2500?
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