If it happens again after your warranty runs out, don't worry about replacing the pump too fast. We have an 06 caravan 3.3 that started the power steering whine at 96,000 miles, and it now has 188,000 and hasnt gotten any worse. Just another Dodge "I'ts not totally broken, so why do you think it's a problem?" moment. That is the usual response from the dealer when you get close to warranty.