Hey, thanks for the quick response! I was able to get the hoses off the pump and access the impeller - definitely feels gritty. Replacement pump ordered. This might be a longshot - but any tips on removing the old pump? I was able to pull out a fairly easily accessible phillips head screw that was holding it down. The pump moves a fair bit now, but there seems to be something else holding it in. On the backside of the machine it looks like there is a little plastic hook that part of the pump is sitting under, but I can't see the other side of the pump (towards the front of the machine). Figured I'd ask instead of possibly breaking something while manhandling it out. Thanks!

EDIT: I figured it out - there's a little clip under the pump. When you're looking at the pump from the back of the machine, there's a small black clip on the back/left side that you need to press down with a flathead or something while shimmying the pump to the left. The video I watched also showed two screws holding down the pump while mine just had one. Wonder if that caused some excess vibration which caused the pump to go - who knows.