For those of you with modern Buick Regals: I've changed my share of bulbs in my driving life, but this one has me floored. The LR turn signal has gone out. Manual says to remove the trim cover inside the trunk, then undo two wingnuts; and I've done that. But I see no way to get the light assembly out! 1) The manual tells me, once the wingnuts are off, to lift the tail lamp assembly out. But it doesn't move in the slightest. When I feel around in there, it seems that it is not a separate piece, that the bulbs are within the body shell itself. Now my car is a German-built (Russelsheim) model. Is it possible that the Canadian-built cars have a different setup from the German-built ones, and I have the wrong manual? (It's been known to happen. My manual does not have the instructions for changing the A/C filter, for example, but the online version of the 2011 Regal manual does.) 2) Even if the assembly comes off, I don't think it can be maneuvered out through that hole in the stiff felt trunk liner. Is it possible to get to it by removing or loosening the liner? If so, how? There's a flat button-with-washer (I think) up along the fender. How does that come off? Any help appreciated!