93 cadillac deville fuel data center has c and dash light goes off and on

Do you know how to test automotive electrical circuit's ? Viewing wiring diagrams , using a DVOM - digital volt ohm meter . Hooking up a scanner an checking for DTC'S - diagnostic trouble code's in the fuel data center an the BCM - body control module ? If not ,your best bet ,take it to a qualified repair shop. Free wiring diagrams here http://www.bbbind.com/free-tsb Enter vehicle info. Year , make , model an engine > Under system click on body & accessories , then under subsystem click on instrumentation .Click the search button then the # 3 blue link . I would buy a factory service repair manual as well . You have no idea of the complexity of the electronic's on these video's .

The dash module needs to be removed and sent out for repair, they are notorious for this kind of problem.

On the 1993 Sedan de Ville, The hazard flasher is easy to locate, under the dash between the steering column and the radio. Looking up, you will see the smooth round side of the flasher and the wires will be attached to the top.

The turn signal flasher is more difficult to get to, but readily accessed with a T-15 torx driver and a little patience. It is located to the left of the steering column, but is most easily accessed through the dash panel instead of from underneath.

1. remove the T-15 screw from above the headlight switch, above the fuel data center, and above the small panel similar to the one around headlight switch. All of these are somewhat hidden, and you'll need to feel for them or get low and look up at them.

2. Using a bent piece of wire or an allen wrench, or anything else handy, pull off the small trim piece that is directly below the steering column. On my car, this is wood-grained plastic. This will expose two more screws that need to be removed.

3. Now, you should be able to remove the large dash trim panel that goes around the fuel data center.

4. Unscrew the two T-15 screws that hold the fuel data center into the dash, and it should pull straight forward. There should be plenty of wire to move it out of the way.

5. The turn signal flasher is the silver can that you see to the right in the opening you just created by removing the fuel data center module. It has a single plug with two conductors on the back. I had to use a small screwdriver to pry it off.

It is a different part number, so I don't know if you can just swap it for the hazard flasher to test it like you can on many cars. I just replaced mine with a Wagner 323, which is what came out of mine.

There are three fuse blocks in most late model Cadillacs. The engine compartment fuse block, the MaxiFuse relay center and the rear compartment fuse block.

1991-93 Deville, are equipped with a fuse block located in the rear of the engine compartment. There is also a fuse/relay block, located in the glove box behind an access panel, or on the passenger side, under the dash.

do you mean the digital readings are not lit up or the "Dash Lights" if the display is not lit it will be a circuit board problem.

need to replace bulbs in dash.behind fuel gauge and info center.

If its a digital dash not that this sounds good but smack the dash right in front of the steering wheel a few times and if it clears up or makes it do other things it needs a new instrument cluster.

I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_a3369546f8067589

FRONT SEATING AREA, DRIVER SIDE, UNDER DASH, MOUNTED ON SIDE OF FUSE PANEL.

this is caused by a circuit board failure inside the digital cluster, this cluster can be rebuilt, the only real option on these is a factory repair center, contact your GM dealer for a name and number.

I am currently working on my 92 Deville with the same problem. I was driving along, and smelled what I felt was a smoking printed circuit board. I looked down, and the digital fuel data center and climate control panel were dark.

I have the factory shop manual, and with the aid of a meter and the manual, I traced the problem to a bad BCM. The 16v supply coming from the BCM was gone. Opened up the BCM and found an overheated transistor. I also removed the fuel data center and the Climate control panel. The fuel data center panel did not smell good. I found a shorted capacitor on the Fuel data center circuit board. I am replacing the capacitor, and will be picking up a used BCM at the boneyard tomorrow. I might also have an overheated wire in a cable that might have to be replaced. I have not gotten that far in the troubleshooting yet.

Good luck with your problem.......