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Tips on blower motor
I have a '91 C1500 Silverado. Blower motor fan works great on HI barely on MID and nothing on LOW. Found blower resistor shorted and replaced (3) relays for AC & HI/LO motor, but still not getting anything in LOW. I feel next step is changing blower motor. Any tips or suggestions and is motor located in the hump before resistor?
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If you can get to the resistor on the blower motor, then use a multimeter on the + feed to the motor and check the levels of power in all stages(Low Mid High etc.) of the switch. That unit could be bad.
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I have the old push button circuit board AC/HTR control system. Which electronics work great in a good climate controlled area, not in a vehicle that's in S. Louisiana in mid-Aug. I am able to get to circuit board and do voltage check on entire system. That's the problem w/ this system if my fan button/switch is bad then I have to change out the whole circuit board; dealer item only no aftermarket on this. But, thanks anyway will do all my voltage tests possible before looking at blower motor.
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