I was having an issue with the ice maker not making ice due to a build up in the back telling the sensor it was full so I took it out, cleaned it and put it back in. It was working fine until I went to get cubed ice out and it made a very loud motor/grinding noise when it dispenses. I pulled the tray out again thinking I didn't put it in correctly and the loud noise went away but the ice maker would only dispense crushed ice so I found the problem was a lever stuck in the up position in the back so I pushed it down and have had no problem between cubed or crushed. Now however, the loud noise is back when dispensing cubed ice and is a normal dispensing sound when doing crushed ice. Help?

My icemaker was making the loud sound and I replaced the entire unit. A few hours later the new one was making the same sound. Could this be a bigger issue inside the freezer or just coincidentally a brand new icemaker has the same problem?