When I first got my 01 Single Cab Silverado, and the front passenger side turn signal didn't work nor did the passenger side taillight work. I figured it would be the light bulbs that were bad but have since replaced them and still no light on both sides. I ordered another OEM headlight harness to see if I had some bad grounds or bad connectors for the front, but would that be tied to the rear somehow? Or could it be fuses? Any advice in helping me figure this out would be greatly appreciated.