MY AC HEATER FAN STOPPED WORKING WO WARNING ON ...
2003 GMC Savana
February, 26, 2013 AT 6:51 PM
My AC/ heater fan stopped working w/o warning on all speeds. I checked the relay and its fine, tested the fan and it works, bought a new fan resistor and plugged it in and still not working. What else could it be?
Did you check for voltage, anywhere? Did you check applicable fuses? Not only check the fuse, check for voltage on the fuse circuit. The hvac fuse, goes hot with the key on. The blow fuse is high speed only, hot all the time.
Wityh hvac turned on, check voltage and ground at blower connector. Purple wire is voltage, black wire is ground. Check both.