Have a 1999 Chevy Lumina. Brake lights do not work and neither do the blinkers. Changed bulbs, fuses are okay, changed flasher module, have run out of ideas. HELP!
The problem is probably with the multifunction switch. Try turning on the emergency flashers. If they don’t work either, the problem is with the multifunction switch.
+1 for Tester’s comments. The multifunction switch is a very common failure on this vintage of GM products.