Mechanics

OLDSMOBILE ALERO HEATER PROBLEM

2003 Oldsmobile Alero • 186,000 miles

The fuses keep blowing for the heater blower and heater. Why? What should I do?
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Tonyaboone
December 29, 2012.



I am attaching a wiring diagram of the heat/A/C system. Note the blower motor circuit on right. It ends in a splice pack that could likely be a source for a short. However you are going to have to inspect all wiring in circuit for exposed or shorted wires.