It's located in the convenience center under the dash. Hope this helps. Good luck
1989 GM what? Need make and model.
The newer GM vehicles incorporate the turn signal flasher with the hazard warning module
The flasher on a 2002 Alero is all part of the hazard switch up on the dash. I just had mine replaced under GM's special policy for the signal light problem and I asked them where the flasher was.
The Flasher Relay for the 98 Lumina Sedan, (and all 97-03 GM W-Body
Blown fuse or bad flasher unit. Often, cars use different flasher for the turn signals and the flasher, so it is possible for the hazards to work and not the turn signals.
The turn signal flashers for most GM vehicles is left of the steering column, under the dashboard. There is usually an access door covering the fuse panel where the flasher lives.
The 4 way flasher is usually installed in the fuse box and the turn signal flasher is mounted next to the steering column on the right side. Most late 80s and 90s GM vehicles are this way. However, I am not 100% certain on your car.
Try under the dash, just to the right of the steering column. GM started "hiding" them there in the 80s.
Is it a diesel? If so that is why. If not then perhaps it was setup to pull travel trailer of some kind.
It should be right there on the fuse box. If you still can't find it, try calling a service center at a GM dealer.
The Fiero has two flashers from the factory, the signal light flasher and the emergency or four way flasher. These are identical GM style two prong flashers. There are many quality levels and even a few novelty flashers available.
The turn-signal flasher on my 2001 Olds Intrigue is the same unit as the hazard warning unit. The part number is GM 10401280. you can access to and replace it through the center vent air deflector. You can use a small flat screw driver to open the top clip of the vent deflector to remove the vent. The Hazard Warning Switch Turn Signal Flasher will be visible on the left.