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Author Topic: blower motor ?  (Read 3850 times)

Offline tigwelder

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  • Posts: 83
blower motor ?
« on: November 10, 2013, 08:33:02 pm »
1985 K 20 factory air. blower motor only works on high . had 3 speeds a month ago.any ideas?
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Offline Jason S

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  • Posts: 1561
Re: blower motor ?
« Reply #1 on: November 10, 2013, 09:05:24 pm »
Have you checked the connections at the resistor?
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1973 GMC K2500, Super Custom, Camper Special, 350, TH350, NP203, 4.10's
1974 Chevrolet K10, Custom Deluxe, 350, SM465, NP203, 3.73's

"1) Peace through strength; 2) Trust but verify; 3) Beware of evil in the modern world"

Offline tigwelder

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  • Posts: 83
Re: blower motor ?
« Reply #2 on: November 10, 2013, 09:36:30 pm »
No, where is it located? thanks
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Offline Jason S

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Re: blower motor ?
« Reply #3 on: November 11, 2013, 07:19:57 pm »
The resistor is located under the hood on the top side of the a/c evaporator housing.   
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1973 GMC K2500, Super Custom, Camper Special, 350, TH350, NP203, 4.10's
1974 Chevrolet K10, Custom Deluxe, 350, SM465, NP203, 3.73's

"1) Peace through strength; 2) Trust but verify; 3) Beware of evil in the modern world"

Offline tigwelder

  • Newbie
  • Posts: 83
Re: blower motor ?
« Reply #4 on: November 12, 2013, 08:49:58 pm »
I WILL CHECK IT..
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Offline Jason S

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  • Posts: 1561
Re: blower motor ?
« Reply #5 on: November 12, 2013, 09:50:32 pm »
Also, you may want to move and slightly wiggle the fan blower speed switch between fan settings on the HVAC control.  The contacts within the switch may have a bit of corrosion, especially if the blower fan switch hasn't been operated in a while. 

FYI- I had similar issues arise this morning...
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1973 GMC K2500, Super Custom, Camper Special, 350, TH350, NP203, 4.10's
1974 Chevrolet K10, Custom Deluxe, 350, SM465, NP203, 3.73's

"1) Peace through strength; 2) Trust but verify; 3) Beware of evil in the modern world"
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