Ok.. so no finished the reseal of the front cover.. replaced the waterpump and thermostat and fan clutch. Bled the coolant as instructed in many threads.. I took the truck out today at 1230.. I still have some cavitation behind the dash? I'm sure it's from the repair. It isn't running hot according to the dash and the heat works perfectly. Is this normal? Is it normal for the fan to be as loud as it is?