Anthony Gammon

Hey everyone! I have a 2021 Silverado High Country with the factory LED lights. My taillights are factory, and have just been tinted. Recently, my passenger side taillight has been flickering on and off, and I get a hyper blink when I turn on the signal. It was working some of the time, now it doesnt work at all. I can get a single faint light on top, and the break light works but the DRL and blinker doesn't. I had moisture in the bezel, so I drained, dried, and sealed the bezel. I have dielectric grease in order to help connection, but everything looks good... after testing with mutimeter, I believe I have a bad ground, but cannot locate a single ground wire on the truck.... can someone please help me locate the ground wires so that I can clean, and put back together with dielectric grease and see if that will fix it. I think it is wiring and not the light itself. Driver side works as it should, so definitely an odd issue. Any help is greatly appreciate!