Hello everyone, I just bought a new 4500 chevy kodiak 2009 dump truck it was left over. It is a nice truck but I got a question that maybe someone could help me with. There is only 2 seats in it, it doesnt have a middle seat instead of the middle seat though there is this metal contrapation on the floor. There is this cylinder shaped mechinism that you can turn and apparently there is a hole on the bottom of that falls into this box/safe looking thing. What is that and what is it used for?