To replace left rear turning signail bulb - 2006 Chevrolet Express

Force that black appliance off of the 2 'snaps' on the opposite side of the bolts that hold it down.then take a wide blade cold chisel, put it up against the edge of the appliance where the snaps are holding it in place, and tap with a hammer away from the body of the van. It will pop right off with a little persuasion and won't t break it in the process. Once it's off you have one more nut to remove on the tail light to get to the bulb. When you're done, you just line up the pegs and push the appliance back on, then finish up with the nuts and you're done. Hope this helps