The models that came with the interior tire carrier had a different rear pocket that had a light. Here's an image of an 05
http://parts.nalleygmc.com/showAssem...modelYear=2005
I'd be a little leery about that plate too. They look like aftermarket tow hooks...the stockers would not block the plate as much. If you keep your rear pocket you could just drill some holes and bolt the plate right up...of course you'd be running without a light, and that could be just as risky as blocking the plate with that massive bolt.
LOL...decisions, decisions...