Just bought a "94" Sedan Deville and turn signals not working. Where is the flasher unit located?

Modern vehicles don't have a flasher unit, they work from a signal from the Body Control Module. The article below is for a 1999 model and says with a picture

Okay. It is located under the dash on the driver side of the vehicle right next to the steering column.

https://www.justanswer.com/car/16er8-turn-signal-relay-located-dash.html

and

https://www.google.com/search?q=%222004+Cadillac+Deville%22.+turn+signal+flasher+location&tbm=isch&ved=2ahUKEwi-t5mAvqj2AhX-gHIEHcFLA_EQ2-cCegQIABAA&oq=%222004+Cadillac+Deville%22.+turn+signal+flasher+location&gs_lcp=CgNpbWcQAzoHCCMQ7wMQJ1CxEliGU2D8amgAcAB4AIABf4gBqAKSAQMyLjGYAQCgAQGqAQtnd3Mtd2l6LWltZ8ABAQ&sclient=img&ei=zPAfYr6hBv6BytMPwZeNiA8&bih=937&biw=1920&rlz=1C1QJDB_enCA643CA644

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If all the bulbs light up but don't blink, you need to replace the turn signal flasher unit. A replacement unit should be available at your local parts store, and they should be able to look up a location for you. These flashers are typically hidden under the dash in various places on different types of vehicles.

My name is Israel and I will try to help you out. One place you can check for this is the fuse block. You will be looking for a aluminum style cap. It might be located top right. This is the best that I can help you with this. Good Luck.

Check the turn signal stalk/ lever to make sure it is receiving power from the battery and than if it is giving power to the turn signal circuit.

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.

Yes they use a different flasher unit for the turn signals,

The turn signal flasher is located under the dash to the right of the steering column on most models. The hazard flasher is under the dash, to the left of the steering column. On 1980 and later models, both the turn signal flasher and the hazard flasher are located at the lower left hand and the upper right hand corners of the fuse block respectively. There is an inline fuse for the underhood/spotlamp circuit. The fuse box is marked to indicate fuse size and the circuit(s) protected.



Fig. 1: Common fuse color coding




Fuse panel with mini-fuses-1980 and newer full size Cadillac shown

Hope helped with this (remember rated this help) Good luck.

Turn signal flasher module is behind dash left of steering column near chime module. I have a 94 Seville and I had that same problem you need a Turn Signal Flasher Moduel, I forgot the proper term for it but I had to get mine replaced too. When I hit the signals to turn the side light would come on but the signal light wouldn't. Its a little box you get from Cadillac it only cost like $20 - $25 and you get it installed and trust. It'll work again. I just got mine done this week and my car now has turn signals again.

check to see if the bulb is good and if it is replace the flasher located under the dash.

for both issues, could possibly be the flasher unit for the blinkers.....which could be separate from the hazard flasher unit...(happened on my 92 chevy lumina) or the actual turn signal switch which is located in the steering column....not the stick you push, but the part inside that the lever controls (also happened on my lumina............3 times)

TIP:

start by checking the flasher....its cheap maybe 3-4$ for a new unit.....if thats not it and you figure out its the switch, go to a junkyard.....its wayyyy cheaper