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02-02-2016, 09:09 AM
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#1 |
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Registered User
Join Date: Oct 2015
Location: Montgomery, TX
Posts: 4
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A/C and heat not working
When I try the A/C or Heater I go no blower action. Have checked fuses and replaced relay on the firewall. Any troubleshooting ideas would be welcome.
1978 GMC K15 Thanks 
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02-02-2016, 10:04 AM
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#2 |
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Senior Member
 
Join Date: Jul 2000
Location: North Texas
Posts: 3,597
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Re: A/C and heat not working
Try applying 12 volts directly to the blower motor, assuming the connector is easily accessible. It is on my 82 C10 without AC.
__________________
Mike 1969 C10 LWB -- owned for 35 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, recent AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- sold 1981 C10 Silverado LWB -- sold, but wish I still had it! 1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 24 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then! |
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