Defective blower motor resistor module. this is true except if the control module is malfunctioning at which point the defrost goes to emergency mode in which the defrost will stay on permanently. My module will not power up and I need help with wiring schematics to find a bad ground or power wire
Bad blower resistor? Bad low speed relay? Bad switch?
replace the blower motor resistor
If the blower runs on high it will get hot. If the blower is wearing out this will cause it to get to hot and blow.
Replace the high speed relay.
needs new blower resistor
The blower motor resistor is defective.
More than likely the blower motor speed resistor burned out.
the blower resistor is bypassed on high. a direct path to ground. if high is the only operational speed the resistor is bad.
blower motor resistor is bad
Sounds like your Blower motor resister, it controls the voltage to your blower motor, controlling the speeds, if you always have it on high, med ect. that speed is more likly to burn out first
you need a new blower motor resistor
The blower motor speed resister is probably burned out.
I work for a GM dealership, and referring to this vehicle, that is most often the blower motor starting to fail. If the blower resistor failed, it would probably not blow at all at certain speeds.
the resistor for the blower motor is busted blower works on high with out it
Blower motor resistor may need replacing
Yes it does power has to go thru it first and if current is to high it will blow the resister as like a fuse
Blower resistor needs replacementRelay for low speeds needs replacementBlow motor needs replacement (one of the 2 windings burned out)
Check the blower motor put the fan on and see if it blows on high if it doesn't replace the blower motor if it does blow high replace switch
just had the same prob...it is a blow resistor or fuse..took mine to the mechanic next door and he told me but i forgot...didn't cost much to replace
If it does not blow cold air, the system may be low on freon. If the blower motor doesn't seem to blow much air out the vents, one possiblity could be obstructions in the duct work such as mice have built a nest (not uncommon). Also the high speed relay for the blower motor could be burned out.
Blower motor switch. Put it on High and it will blow when sitting still with the engine running.
North Allegheny Intermediate High School was created in 1960.
more than likely the blower motor resistor is out. it uses resistors to reduce the voltage sent to the fan to make it spin slower when the resistors go out on low and med your are left with high witch is battery voltage 12v.
If your talking about your blower motor only working on high its usually your blower motor resistor that has stopped working properly. (The blower motor resistor is an electrical component which limits the flow of electricity to your blower motor, allowing it to spin/blow at different speeds). It is easy to replace on some vehicles that have easy access to them because all you have to undo is usually two screws/bolts and one wiring connector.
It gives you all the blower motor speeds except high. all blower motors are 12 volt, so on full speed they turn fast and blow a lot of air, to make the fan turn slower [and blow less air] they route the power through a resister, it drops the voltage to the motor so turns slower, on a 4 speed motor there will be 3 resisters.