My Turn Sigs Is Not Working Right

[04_5.3]

When I turn on my sigs on it works fine but when hit the brakes it stops working and it turn and brake lights both flash. so what is up with them and my 3rd brake light does not work at all

[jrrod2004]

When I turn on my sigs on it works fine but when hit the brakes it stops working and it turn and brake lights both flash. so what is up with them and my 3rd brake light does not work at all

 

 

Check fuses to make sure that the circuits are protected...and then check/inspect the rear harnesses closely. I would plug and unplug the harness and then plug it back in after inspecting them. If damage is found, replace both harnesses.

[SilveradoWV]

I assume you have checked all of the bulbs?

[06Voy]

crawl up under your truck right above the tail pipe you will see several connectors clean those out and make sure they are plugged in good. Its very easy for mud and water to get in them. It is a problem with those trucks I have already had this problem and it took me several months to track down as it would come and go.

[04_5.3]

Thanks I will check it out