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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.
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∙ 13y ago
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Why would the heater in a 2002 Grand Prix only work on high?
Defective heater resistor pack.
Why does heater in 1996 Dodge Grand Caravan heater only work on high?
Maybe because your climate control system needs to be repaired....
Why does my heater fan only work on a high speed and how do I fix it?
try replacing the blower motor resistor
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The blower motor speed resistor is burned out.
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The first thing that you need to check will be the coolant level..................
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try replaceing the switch that controls the low to high for heater It's gonna be the blower motor resistor (near the blower motor).
Why would the fan controls in a 1986 Pontiac Sunfire only work on high?
Defective Heater Resistor Pack.
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Check the low speed relay and the resistor at the motor
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Most likely and bad blower motor resistor.
Why does heater fan on 95 silverado only work on high?
You most like have a bad blower motor resister.......
1996 Nissan altima heater ac switch will only work on the high 4 won't work on 1 2 3 changed switch still the same thanks for answering?
Heater Blower Resistor
Why does the heater blower only work on high?
from what i have read it is the blower motor resistor it goes bad and only lets the fan run on high google blower motor resistor and read on
