hello need advice was driving home when serpentine belt came off. under hood was coolant all over front of engine. im thinking waterpump gone bad but would like 2nd opinion. 08 3500 has 125k mi. just replaced belt and coolant at 100k hoses look ok water drains out around front of engine when i put some in hard to tell exactly where as it is raining and everything is wet so waddya think? water pump?