Left turn signal and brake light not working
I have a 2013 Chevy Avalanche Black
Diamond LT. And my left side the running
lights all work but the brake light and the
turn signal and the turn signal on my mirror
doesn't work. I have disconnected the
harness and they back under the bumper
and they harness on my headlight on the left
side and clean them both and put Dielectric
grease on them and they're still not working.