Turn signals dont work, brake lights, or flashers. on 1999 Chevrolet Lumina

Turn signals, four way flashers, and brake lights do not work. Arrows on dash do not light. Fuses look good. Could this be a flasher unit and where is it located? I cant find it in the owners manual.

Asked by for the 1999 Chevrolet Lumina
replace turn signal switch. The brake lights are controlled through it for some reason. I had the same issue, replaced and all is well.
1 more answer
sounds like the relay went out usually under the dash by the glove box or under the steering coloum