No, you're not the only one who's needed multiple water pump replacements. When my pump went out at ~60k it took the dealer 4 replacement pumps before they managed to keep one running (I'm now at 105k). None of the 1st 3 pumps lasted even 10k miles, and one only made it to 2k (average wa maybr 4-5k). I have no idea whether or not the dealer was properly cleaning out the washer or not. I got pretty pissed at the dealer, but eventually they managed to put a functional water pump in! All of the subsequent replacements after the 1st one was on their dime, of course, that's why I kept going back to them.
