I have looked and looked but cannot find where someone has addressed this directly. Yesterday evening I got the dreaded power steering moan. Then the weird thing is my voltage gauge in the cab dropped and then fluctuated. My first guess is that the pulley on the water pump is going bad and not turning the alternator at the right rpm. No lights came on. My plan is to loosen the serpentine belt and turn the pulleys by hand. But my question is, this is a power steering problem right? I mean the dreaded moan when turning the car at low speeds is definitely an indicator. I normally wouldn't question it but then the voltage drop kind of had me wondering. Thanks for the help. Due to this website I feel like this won't be hard to swap out with a new one.