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Discussion Starter · #1 ·
Hey everyone, So the manual controls aren't workin except the 4th level on the speed knob. Could it be a sensor? Can't be the compresser it blows cold. We still have the 2004 SES.

Thinking about replacing whatever the issue is myself thanks.
 

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^+1. The blower motor resistor is burnt out, just replace it. The reason 4th speed works is because it's the highest speed which bypasses the resistor to allow full power to the motor.
 

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Check amp draw on blower motor to be sure it is in spec. Many times the blower bearings are going bad causing excessive drag and therefore increased amp draw, burning out the resistor. On the other hand, sometimes they just go bad on their own.
 
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