look in your owners manual if you have it.
There is no such car as a 1989 Monte Carlo
Check for a blown fuse. If the fuse if OK, replace the Flasher Relay.
i have a 96 Monte Carlo and i had the same problem. try pulling the turn signal switch to you slightly while in the signal position. works for me every time.
In all likelihood, in a relay box, under the hood. Failing that, it ought to be in the fuse panel, inside the car.
Above the radio there is a button with red triangles on it. That is where the turn signal flasher is. You have to take the dash off to get to it.
you probably need a new turn signal flasher .
Check out this web site: http://tss.likeabigdog.com/
Part of the hazard warning module
Probably turn signal flasher
The turn signal/hazard flasher is integrated into the flasher switch. A very common failure on these cars.
I had this problem with my Monte Carlo, I think it was that I needed a new turn signal switch. I think there was a sensor or something that was broke too?? But I believe the dash panel lights not working at night had something to do with a short in the turn signal switch.
try yearone.com