SOURCE: 2000 Olds Alero. Cooling/Heating fan stopped
The blower is on the right hand side under the dash. You are right in thinking the blower resistor is the problem. The resistor is in the heater box behind the blower. Only 2 bolts hold it in but the back one can be a challenge to remove. The bolt is 5.5 mm.
Check for power and ground with a test light at the resistor connector. You should have power on the colored wires in the various switch positions. The black one is ground.
Its either a bad connection on the blower motor resistor or a faulty blower motor resistor.These are known for over heating.
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