I have a 2007 5.0 GXI-G that the water pump separated from the pulley, there are 3 hex bolts that holds the pulley but seems like I dont have the right allen wrench that fits this bolts, i have tried metric and SAE, any helps is appreciate it.
Problem fixed, it's a 5/16 but since the factory pump its painted you have to tap the hex socket a little with a hammer to drive it in, i have the pulley successfully removed.
