Now I have tried isolating the front and rear lights to see if one or the other maybe causing the issue. No luck on either one. The one good piece of news is I did get my heater lamp bulb working, just needed to be grounded properly.
The only think I haven't tried for this issue is replacing the flashers. I don't know if it will do anything but these are the only part of the circuit that I can't tell for sure is bad or not. I've been reading a little bit about using LED with standard bulbs which can cause problems but the running lights appear to work fine on my LEDs.
If I was to get a flasher I was looking at this one as it's designed to anticipate issues:
https://www.octanelighting.com/Chevr...yABEgJUTPD_BwE Kind of expensive though. I'll take any advice right now. This is driving me crazy.