So I was able to carefully pry the bezel off with a small screwdriver and a plastic trim tool to reveal 2 mounting screws, however the lights are self contained LED with no replaceable lamps. This light was used on many Winnebago motorhomes like View/Navion etc. and was made by Glo Brite but Googling the part numbers came up with multiple "No Longer Available" results. I finally found some at vehiclelight.com that look and measure identical to the Glo Brites and I ordered both brake/tail and both amber turn signal as 3 out of my 4 lights had multiple burned out sections of LEDs. If anyone in the future comes here looking for how to remove, carefully insert a small screwdriver into the top part between the bezel and the lens and lift just enough to allow a plastic trim tool then carefully pry till it pops off.
2011 Winnebago Via on 2010 Sprinter Chassis