I found this on my 1997 Silverado and found the connection from the wiring harness to the back OS the switch itself was loose, I could wigle it arouns and make the lights come back on.
where is the ground wire for the brake and turn signals on 2002 silverado chev pu. also do you have a copy of the wiring>
In all probability you have a bad ground.
check the brake light relay under the hood
check the turn signal flasher
Yes.
1985
No. Daytime running light can be disabled without affecting turn signals.
On the left side of the Steering Wheel
Check the fuse panel it is possible you blew the fuse needed to run the turn signals
If you have brake lights and turn signals and a headlight the answer is yeah.
I always start with the basics.......fuses. Then go to bulbs...... Look in your fuse panel and see if you have one marked tail lights......and check it. the brake, headlights and signals work off another circuit.
the circuit boards on the taillights are bad.