This is the FIFTH time. Motor, controls have all been replaced.
SOURCE: BLOWER MOTOR ON 2004 AVALANCHE IS SLOWLY PUMPING OUT AIR
it may not be the blower motor. it may be the blower motor control module which use to be the resistor. it's located under the pas. side. remove the black coyer , 2 scaews above the pas. foot area. then remove the blach unit that has a purple wire going to the back of the motor on the right. price about 140 dollar with tax.
SOURCE: 1995 chevy alumina blower fan motor not working
The problem is most likely the blower motor resistor. I'm not sure where it is located on your vehicle, most are on the firewall under the hood or near the blower motor itself.
SOURCE: blower motor only runs on highest selection
you need a new resistor pack it control the speed of the fan,
Testimonial: "somewhat helpful"
SOURCE: blower fan stops working and then starts again
My suggestion is replacing your wiring going to the resistor which is acdelco part number PT1231. I have had the problem of speeds 1,2, and 3 intermittently working while 4 always worked. Afterreplacing this part, all of my fan speeds work all of the time.
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We took it to the dealer and they replaced the contoller and motor and assured us this would be the last time to fail. We'll just have to wait and see.
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