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Cadillac Repair/1983 Cadillac Seville


Hello,, I have a 1983 cadillac seville and the digitial odometer and fule guage started flickering on and off and now it shows no readout at all,, can u tell me the problem and what needs to be replaced?  thanks


These displays had issues new requiring the IP to be sent to a GM Delco authorized stereo store for repair.
You could have a bad or loose dash ground under the dash. You could have a cracked circuit board in the cluster.
Sometimes these problems show their ugly head on a crisp cool morning and as it warms up ans the circuit board expands over day eating, problem is gone. Unfortunately, you are dealing with very old electronics, that I know of no on that even repairs this stuff anymore, if the cluster is the issue.

As I do frequently, I recommend that you purchase a 1983 Cadillac Seville/Eldorado service manual from Craig's list or Ebay.
The diagnostic flow charts can walk you through diagnoses and repair of this and any other problem you may run across in the future taking all the guess work out.
I have owned 5 or 6 Eldos of that vintage and lso had dash IP cluster problems and I could not get those problems serviced, but at that time, there were still plenty of those cars at the junk yards for parts.
Te manual will tell you where the grounds and connections are as well as tell you how to remove the cluster without breaking anything on brittle plastic.
You might find a manual for around $50.00. A very chep reliable tool!

Good luck!

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Rob Painter


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?


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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