Chevelle Blower Motor Switch, With Air Conditioning, 1973-1977

Discontinued since 7/1/81, the original 5 prong switch used the 5th prong for the continuous fan operation. GM engineers found that the fan operation created a safety hazard for tired drivers falling asleep at the wheel. Because of this, the design was changed to a 4 prong to eliminate the use of this function. This 4 prong design is the GM replacement.



Murphy’s Law… you hop in your prized Chevelle or Malibu on a freezing day, or if you have AC, a super hot day, and fire up your baby. You go to adjust the cabin temperature and……nothing happens. You slap your dash and belt out a few obscenities or something like that. It could be your blower motor, or the wiring, but most likely it’s the blower motor switch. This little electo-mechanical device allows c

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