It’s a 2002 s10 long bed, single cab, with the 4.3….. I have yet to try replacing the marker light yet, I ordered an led replacement, the one that was on the marker was also an led but the top of the led broke in half so…..the bulb “is burnt out” or not functioning . My front signal and the taillight signal both work but they don’t blink/flash, they just stay in the bright setting of the turn signal…..