Since this is the first GM truck I've owned, i need to replace a reverse light on the passenger side.. I hate to sound "stupid", but I haven't a clue how to remove the tail light assembly to get to the bulb. I have a Chevy bed liner in the truck, and all I can see when I pull it back are 2 screws on the side near the tail-gate... I looked through the forum and (hopefully I'm overlooking it), but haven't found anywhere that it tells me how to change it - which I'm assuming you remove the entire housing to get to the bulb.. Thanks!!