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Question
I have a 1993 STS Northstar ! My problem is that the electrical warning alerts, go bonkers... Saying the car needs trans fluid change , virtually everything! Also when the car is running it runs great performance is excellent. However there is no response from the Heat control, I can't adjust the heat or air in any way. And when I shut the car off the blower motor continues to run Does this sound like the Body Control module ?
Hello,
I love Cadillacs, but they can be a money funnel. Some of the best cars I have ever had were Cadillacs. The caveat to this statement though is some of the worst cars I owned were Cadillacs.
I can not complety address all your problems, but I can tell you where to get all the info you need.
For less than 30 dollars you can get all the factory diagnostic flow charts, schematics--everything!
Http://www.alldata.com Just type in year, make, model.
Your heater problem is very common since the 80's. Chances are the resistor block is bad. Very expensive to fix.
If you write me at robo14@aol.com, I can tell you how to go around the problem.
Rob
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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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