Hello All, I am new to the site and to the Silverado as well. I just purchased a 2008 Crew Cab 4x4 in September. I have a few questions I hope you guys can answer. The first one is that I didn't get it with a trailer hitch so I know I have to purchase one. The question is, there is a plug that is connected to the back of the bumper but I can't figure out how to get to it. It looks like the cap would just open on the outside of the bumper but it doesn't. The other question I have is when it's in 4wd high and I make a tight turn like in a parking lot. The truck seems like there is something holding it back. Hope you guys can help.