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73-87 Chevy _ GMC Trucks => Interior & Equipment => Heating, Ventilation & Air Conditioning (HVAC) => Topic started by: thelincolnguy on January 25, 2017, 07:17:19 am

Title: Blower motor
Post by: thelincolnguy on January 25, 2017, 07:17:19 am

Hello all. Finally getting around to trying to fix the heat in my truck. When i bought the truck the blower motor worked in all speeds. Now it doesnt work at all. Replaced the relay on the heater box and checked the wiring. Have not checked the switch on the dash yet. Anyone have any other ideas?

Title: Re: Blower motor
Post by: Irish_Alley on January 25, 2017, 07:24:16 am

is the blower motor getting power? apply 12v to the spade on the back of the motor and see if the motor is still good

Title: Re: Blower motor
Post by: thelincolnguy on January 25, 2017, 10:27:18 am

Just ran a jumper wire from batt to spade terminal. Does this mean the motor is shorted and needs replaced?

Title: Re: Blower motor
Post by: Captain Swampy on January 25, 2017, 04:06:09 pm

Not necessarily, it grounds through the screws that mount it to the firewall. It could be a bad ground.

Title: Re: Blower motor
Post by: Irish_Alley on January 25, 2017, 05:33:55 pm

did it spin?

Title: Re: Blower motor
Post by: thelincolnguy on January 26, 2017, 07:45:23 am

It did not spin. Ran power and ground straight to battery. looks like blower is bad.

Title: Re: Blower motor
Post by: thelincolnguy on January 30, 2017, 11:30:35 am

Fixed the issue. The blower motor was shorted and had a mouse nest in it

Title: Re: Blower motor
Post by: Irish_Alley on January 30, 2017, 02:32:29 pm

Nice and fix it without spending extra money on parts not needed

Title: Re: Blower motor
Post by: thelincolnguy on February 02, 2017, 12:01:42 pm

Absolutely! Cost $16. Fan was easy to swap over too.