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Cadillac Repair/1983 Cadillac Blower Motor

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Expert: - 6/16/2010


Question
My '83 has 42k miles.  The blower motor has stopped working recently.  At first, it would come on and than shut off after 30 seconds.  Now, the does not come on at all.  The A/C is working and the vent opens and closes, but there is no Blower Motor.  Is there a relay I can change out?

Joe

Answer
Hello,

Very common problem. They use a resistor module under the hood at the right side by the blower. If you can find the part, its about $250.00 plus labor. Cadillac has had heater blower problems for 30 years and you type of car was notorious for it.

I used to see a switch under the dash of one of these that wired to the blower would give you at least high speed.

These resistor modules were common to fail drawing the battery down as well.

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Rob Painter

Expertise

Alarm system questions cannot be answered on this forum. These systems are not what I can answer. Without being physically at the vehicle and not knowing what kind of electrical service has been done on the vehicle, there is no possible way to give an accurate answer over the internet. My expertise is in Ignition/key based anti-theft systems. These issues include GM VATS (resistor chip in key blade) PASSLOCK (MRD)-ignition lock rotation based, no special ignition key and the PKIII Transponder (computer chip in key) systems. These systems are not alarm based and are integral with the starting of the engine. This is why I cannot diagnose alarm problems without physically looking at the vehicle: Alarm systems are a completely different annimal than ignition key/lock based anti-theft system. Many alarm questions come from vehicles 10 years old, and since older, many hands that had been involved over the years.I am an expert in all GM factory (ignition/key based)systems. Alarm system questions pose to many situations beyond my knowledge as to what has been done to the vehicle over the years. Some guy may have actually wired the stereo into the alarm system. Who knows? Over my past 30 years in vehicle wiring repair, I have seen unbelievable wiring disaters done by guys that consider themselves "mechanics." I have seen stereos and alarms intalled using surgical tape. I have seen modules burn up, un-fused circuits, wiring jambed between the doors and even lamp cord used for a starter kill. To answer alarm questions over the internet without examining the vehicle is like asking; What does it take to remove a dent?

Experience

Education/Credentials-ASE certified. 11 years with a GM dealer and 17 years with a repair facility dealing with only the repair of theft recovered vehicles.

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