I have a 1992 Buick skylark and the turn signals do not work it's the fuse i know that but witch one?

Here's a link Jon to your knock sensor removal. SAVE 20 ON ONLINE SHIP TO HOME ORDERS OF 100 OR MORE

1992 Buick Skylark 2.3L MFI SOHC Quad 4cyl

The Knock Sensor is located: Under hood, driver side, upper engine area, below exhaust manifold, mounted in engine block

Here you go Tom , The Flasher is located: Front seating area, driver side, under dash, above fuse block, mounted on kick panel
Application:
Turn signal

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

The main components are the flasher and the switch.
You would need to check for power in and out of the turn signal switch.

Fuses and bulbs OK, but wires? Additionally I suggest keep in mind that turn signals work with FLASHER devices (two independent) on 1993 Buick Skylark..

Application: Turn signal
Flasher is located: Front seating area, driver side, under dash, driver side of steering column, mounted on support bracket

Application: Hazard flasher
Flasher is located: Front seating area, driver side, under dash, above kick panel, mounted in top of convenience panel

Hope this helps (remember to rate and comment this answer).

check the fuses

REPLACEMENT The hazard flasher is located forward of the console on all N-Body vehicles. The turn signal flasher is located behind the instrument panel, on the left side of the steering column bracket. Replace the flasher by unplugging the old one and plugging in the new one. Confirm proper flasher operation.

The flasher is located behind the dash (trim removed for clarity)



PLEASE DON'T FORGET TO RATE!

The turn signal flasher is in a clip attached to the base of the steering column support inside the car. That would put it just about in front of your knees in the drivers seat, up under the bottom edge of the knee panel. I hope this helps you.

you'll have to trace your wires back and see if there is a bad spot also make sure your using the right fuse