that would be the water pump. now take the belt off and see if the w/p pulley has play in it, if so you need a new pump for sure.
if your supercharged, you need a T55 bit to remove the lower sc idler pulley. and you need to un bolt the power steering pump as well.
this is the pump off, the p/s pump unbolted and the lower idler removed.
i also took the fuse box off and tied it off to the side for more room. if your overflow tank is right there remove that too.
and the only tips you should need is to loosen up the 4 small bolts on the w/p pulley before you take the belt off, or you will never get them off, same thing when you are done put the belt back on and tighten up the 4 bolts. and to clean and put thread sealant on the 4 long bolts for the water pump, as they enter the block, coolant will come out when you take the bolts out.
the power steering pump is bolted on with 2 bolts, in the 12 and 6 positions, there is a hole in the pulley, use a 3 inch extension and a socket.
that idler and the p/s pump need to come off to get the 4 long bolts off.
