Cadillac Repair: My Fuel Guage, ECC, and Dash Lights, fuel gauge, fuel guage


Question
For two weeks, my 92 DeVille's instrument panel has not been properly working, at 6 gallons it is really empty because it died one night going around a curve, but after I restarted it to get more gas, it showed E. Then, 2 days ago I was driving and all the dash lights flashed on and off, then the fuel gauge and ECC center did the same. So I drove home. When I got there, it was showing a "d" in both centers. We took the battery posts off for two days and took it to have it checked out, and after replacing the posts, it did fine for a while then everything went crazy again and the dreaded "d" came back. Also, one night the radio just came on and starting playing, but my keys were in my pocket. It seems like once the battery cools down, it's okay; but after it warms up, it begins to malfunction. Could anyone happen to know anything about this problem, possibly what's wrong, and how to fix it?

Answer
You need to replace the BCM computer.

You will need, If necessary, Electrical schematics, Test procedures and picture locations of the components within the system that is causing you problems of which can't be done on this website which only allows one picture.  I do not have a website so you will have to e-mail: onlineautohelp@msn.com in order to obtain the information.