Question about 2002 Oldsmobile Alero
The blower motor resistor is faulty.
On high speed, battery voltage is directed right to the motor.
For any other speeds, battery voltage runs through the resistor pack (in any of 3-4 ways) to reduce voltage and slow the motor down.
The resistor is located (screwed in) inside the heater duct or box somewhere where cold air always contacts it (before the heater core) because it becomes hot and would melt if it wouldn't be constantly air cooled.
You can consult this link http://www.automotiveforums.com/vbulletin/showthread.php?t=665246
for replacement of the resistor (the thread says Grand Am, but your Alero has the same setup)
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Posted on Sep 02, 2008
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Posted on Jan 02, 2017
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