Are the 4.8's prone to leak coolant, mine has 88,000 miles on it and leaves a puddle of coolant after parking it hot but seems not to leak when cold. I'm having some trouble locating the origin of the leak, it drips from the front right side of the oil pan, onto a wiring harness, then gets spread by wind along the edge of the pan. When sitting still it drips onto the front axle actuator. I assume it to be the water pump gasket on that side of the block but dont actually see it leak( even when under the truck, skid plate removed, engine hot, both idling and off). Is there a soft plug behind the pump maybe? Anyone had a similiar situation?