...high speed went out, now a few weeks later, all speeds are gone while a/c, defroster, or heater is on. replaced the blower fuse, still nothing. Change the rheostat. On older trucks it is on the ...
...high speed relay bypasses the resistor. So you should have power coming from the fuse and thru the high relay. Then the resistor for the other speeds gets power from the heat and ac control module ...
replace the resistor pack and heater switch too. You might have minimum success blowing the trash out of the evaporator backwards after you take it all apart, as a passenger when you kick the 'heater'
...high spped relay open thhe cover and expose the relay with key on collapse the relay does the fan come on? if it doesnt replace the fan module if it does you will still have to replace the fan module ...
...high speed operation, the PCM/ECM supplies the ground path for the cooling fan 1 relay through the low speed cooling fan relay control circuit. After a 3 second delay, the PCM/ECM supplies a ground ...
...high speed. Open circuits will not blow fuses. Replace both switch and resistor bank for all speeds. Make sure to clean leaves and trash from fan housing and see if fan spins freely. In my experience ...
Question about GMC C1500
...high speed fan relay over above the battery in the fuse box.Pop the high speed fan relay cover off and manually push the contacts together as a check that the fans can run fast.May just be a bad ...
...the fan defaults to high speed only. The fan resistor is located next to the fan and held into the cooling air duct by 2 screws near the blower motor. The part is fairly cheap and easy to
Question about AC Cars & Trucks
...high speed operation the PCM supplies the ground path for the low speed fan relay through the low speed cooling fan relay control circuit. After a 3 second delay, the PCM supplies a ground path for ...
...high speed because on the high setting the voltage does not go through the resistor. The resistor is mounted beside the blower motor and is easy to replace. There you are, thank you for using FixYa. ...
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