You are on the correct track mbrou1. The assembly does come off by removing the two screws. There are two clear cargo lamp bulbs in there that are replaceable. However the brake light itself is an LED array assembly. Unfortunately if your brake light itself is not coming on and you definitely believe that your brake light LED array is burned out, then the entire assembly has to be replaced. It's pretty uncommon that all the LED's would burn out which makes me believe you may have another problem. Does your cargo lamps come on? If so, I would look at your brake pedal switch. If your cargo lamps do not come on then I would make sure your fuse is good. I'd also make sure the connector at the brake light asssembly is clean and tight.