I have a GE ref/freezer with water and ice dispenser in the door. The water dispenser barely trickles water and shuts off, the ice maker produces a minimal amount of ice. I know that the water flows freely from the copper pipe to the refrigerator, and when I removed the water filter and pressed a tiny black tip that stuck out on the bottom of where the filter gets screwed in, I blew air in the tube back of fridge, and air did come through. I replaced the filter today, Still no luck. Any thoughts on how to repair? Thank you so much

You could check the water valve. It is at the back of unit on bottom where the water supply connects. Could be setiment there causing a restriction.