How do I fix my turning signal on a Buick Lesabra 1994

have you checked the flasher unit. aprox 20.00 at auto zone

Check out and replace the flasher relay. This control the turn signals and emergency flashers. Inexpensive part.

No relay,if they don't come on at all,bet on the turn signal switch,if they come on and don't flash,it's the flasher.
Make sure the emergency flashers aren't on.(if the 4 way flasher is bad and the button is pushed ,it will kill the signals)

could be brake light switch but i would be more inclined to think the signal switch is bad, the brake light circuit goes from the pedal to to the turn signal switch then to the taillights

For 1994 Buick Lesabre 3.8L SFI OHV 6cyl the turn signal flasher is under the instrument panel to the left of the steering column brace. On the Bonneville, it may be on the left side on the shroud. The hazard flasher is under the instrument panel to the right of the steering column.

The turn signal flasher is installed in a clamp attached to the base of the steering column support inside the car. In all cases, replacement is made by unplugging the old unit and plugging in a new one.

Hope helped (remember rated and comment this).

Replace the flasher unit with an electronic version.
The electronic flashers keep the flashing cycle constant no matter what the load is on it.
Your standard flasher sounds like it is failing.

you may have replaced the wrong flasher, some vehicles have separate flasher for the turn signals and the emergency flashers

I think that your flasher is bad I believe that the 4-ways flasher is a seperate flasher unit it should be in the fuse box and look like the 4-way flasher , to find the flasher turn on the 4-ways and you can feel it or hear it flashing and lok for the flasher for the turn signals
Mike

Yes, This is easy. Recall on this problem. Take into dealer for free recall solution and it will stop.

There is a turn signal flasher on your fusebox it should either be round or say flasher control on it and if your replace this your flashers should work fine. I hope you have good luck!