Finally found my issue and why my lights were doing what they were doing. I had installed a set of newer GMC style tow mirror's that have the LEDs on the front side and the glass side of the mirror for turn signals. That use your factory mirror plug for signals. A while back, probably 4 or 5 months ago. The previous owner of the mirror's had said he had custom wired in a resistor or diode or something to make the front LED strip on the mirror to both work as a signal and running light. What I found out was evidently one of the resistors or diode or whatever he had installed internally on the mirrors had went bad and was back feeding the turn signal power back down the running light power feed wire causing all the running lights to flash with the turn signals. I disconnected my running light power feed to the mirrors and problem fixed. Signals now work properly. I guess I'll have to order the Boost Auto Parts dual function tow mirror wiring harness so I can have my mirrors back to running lights and turn signals.