I have a GE Refrigerator Model # Gsh25kgrb, about a month ago it stopped dispensing water, I changed the water filter and reset it but no change, about 2 weeks ago I noticed my ice cubes were about 40% smaller than normal. I did a little troubleshooting and I have 120v at the water valve when the dispenser arm is pushed. I disconnected the coupling before the hose goes into the freezer door and pushed the dispenser arm and I get water at that point.
Last night I emptied the freezer and unplugged the fridge for approx 4 hours in case there was a frozen line, when I turned it back on and pushed the dispenser I noticed water by the coupling slowly rising into the freezer door and after about 2 minutes I started to get a slow drip from the water dispenser but nothing more than that. It almost acts like low water pressure at this point but the pressure did not seem low when the coupling was disconnected and I pushed the dispenser arm. Im really not sure what to try next.

I found the below post that seems to answer my exact issue. I am going to try to fix it this weekend. Hope it helps you too.
Layne
John commented:
I have the answer to the same problem and it costs nothing to fix if your saddle valve is on copper pipe. I was getting 1/8 cup of water in 15 seconds... now it is 1 cup of water in 15 seconds. What you need to do is turn the water off and take the saddle valve apart. DO NOT REMOVE THE WHOLE VALVE. You just need to unscrew the "T" shut off then take the nut off that holds the "T" handle into the valve... do not remove the entire saddle valve, just the handle part. Once you get it out use a 3/32 drill bit. Use the smooth part, not the drilling part and insert it into the valve assembly by wiggling it a bit. You will eventually get it to the copper pipe you have the saddle valve on. Now you take the drill bit [hold it with a pair of pliers so you don't cut your hand] and try to "open up" the hole in the pipe. By making a "figure 8" or go "round and round" with the drill bit you will slowly open the hole in the pipe, which will now let much more water come to the water dispenser. Write me if you need more info... I am so pleased with the "8 times as much water flow" than I had before. Now I actually use it for water! John
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