Both rear tailights and my center reflector are separating along the top seam and water is getting inside them. I'm not sure what would be best to seal them with. I've seen cleared lights and I think as long as mine are halfway there I'll do that too. Do I need a special tool to remove the center reflector? I read somewhere that they use pins to attach them? Thanks.

No special tools to remove the center. I did it recentley, fairly easy, it just pops out if my memory serves me right.

Thanks for the quick reply. I'm still not sure what to seal it with. The sealant that GM used must be dried out because all the lights and the reflector are at least one third separated. I'm wondering what the best sealant would be.