2003 Silverado. The tail lights have an upper bulb that functions as brake (bright) and marker light (dimmer with headlights on). The middle bulb seems to do nothing. I have had my truck so long I forgot what the middle bulb is supposed to be doing. 
Below the middle bulb, are the reverse lights, and they work fine. Anyone remember how the middle bulbs are supposed to behave? I probably need to check fuses and get out the volt meter and see if the wiring/sockets are good.
<EDIT> oh never mind... I forgot to check TURN SIGNALS...
Below the middle bulb, are the reverse lights, and they work fine. Anyone remember how the middle bulbs are supposed to behave? I probably need to check fuses and get out the volt meter and see if the wiring/sockets are good.<EDIT> oh never mind... I forgot to check TURN SIGNALS...
