My ice maker does not make crushed ice anymore, it comes out in big pieces and regular cubes.

Several possibilities, but check first for cubes that are too small (means too little water is coming in during ice maker fill) and those cubes fracture into smaller bits when they are dispensed.

Another possibility is the cube/crushed plate inside the dispenser is stuck. This is a curved plastic piece that lies next to the crusher blades inside the dispenser head of the ice storage bin. For cubes this place must be retracted (swing away from) the crushed fingers to allow the cubes to pass without being broken up.

Remove the ice bin, and in the back of the freezer you'll see a square opening with a white plastic piece inside. When you dispense cubed ice this piece lifts up, lifting the long metal rod that runs along the bottom of the ice bin. When that rod lifts it opens the ice flap at the front of bin, allowing cubes to be dispensed. If the flap is not open, the cubes will be ground against the cutters and you will get crushed ice.

Here's what you can do to make it so that you always get cubed ice. Take a wine cork and stand it on end. Using a good knife, I positioned the blade about 1/3 of the diameter from the edge and cut all the way through the length of the cork. Then remove the ice tray.

Now put your finger in the sqaure opening and lift up the white pastic piece. Slide the modified cork under the flap so that it is jammed into the raised position. (This is the position it should be in when you are asking for cubed ice.) Now slide the ice tray back in while using your left hand to push the plastic ice flap at the front of the tray to the left side (again, the position it should be in for delivering cubed ice). Peer under the tray while you're slowly sliding it back in so that you can see if the metal rod connected to that ice flap successfully slides into the square opening at the back. If it can't slide in above the cork-raised plastic piece, you may need to pull the cork back out and trim a little more off it.

This worked for me... I can't get crushed ice anymore, but I've only needed crushed ice once in the 16 months I've lived here so that's not an issue for me.

Remove the ice bin, and in the back of the freezer you'll see a square opening with a white plastic piece inside. When you dispense cubed ice this piece lifts up, lifting the long metal rod that runs along the bottom of the ice bin. When that rod lifts it opens the ice flap at the front of bin, allowing cubes to be dispensed. If the flap is not open, the cubes will be ground against the cutters and you will get crushed ice.
I had the same problem you do - the solenoid that lifts that white plastic piece is dead. But I also rent the place where I live, and it comes with the fridge. It's not likely the landlord will want to deal with this issue since I can still get ice, not considered a necessity, etc. So here's what I did to make it so that I always get cubed ice.

Take a wine cork and stand it on end. Using a good knife, I positioned the blade about 1/3 of the diameter from the edge and cut all the way through the length of the cork. Then remove the ice tray.

Now put your finger in the sqaure opening and lift up the white pastic piece. Slide the modified cork under the flap so that it is jammed into the raised position. (This is the position it should be in when you are asking for cubed ice.) Now slide the ice tray back in while using your left hand to push the plastic ice flap at the front of the tray to the left side (again, the position it should be in for delivering cubed ice). Peer under the tray while you're slowly sliding it back in so that you can see if the metal rod connected to that ice flap successfully slides into the square opening at the back. If it can't slide in above the cork-raised plastic piece, you may need to pull the cork back out and trim a little more off it.

This worked for me... I can't get crushed ice anymore, but I've only needed crushed ice once in the 16 months I've lived here so that's not an issue for me.

Remove the ice bin . Press the door switch in , and press the dispensor actuator pad . In the back , on the panel with the prongs , there is a square box cut-out , which houses a white square plastic piece . If this piece doesn't lift when set on cubes , then the solenoid is bad or a wire has come off of the solenoid . To access this solenoid , remove the 3 or 4 screws holding the panel on . Also try lifting this plastic piece with your finger , to see if it is frozen . Also a sign that the cube solenoid needs to be replaced .

You need to remove the ice bin , remove ( save ) the ice , and defrost the bin opening with hot water . It sounds like a piece of ice got caught behind the bin flap , keeping the flap from opening fully , so cubes will go thru . When cubes cannot go thru , the crusher will crush anything that tries . Now this is the ice container only .

ice maker works. water thru the door works. lock works. light works, alarm works.
when i try to get crushed, ice cubes or quick ice.
nothing happens

You have a solenoid switch which switches the dispenser back and forth from crushed to cube. It could be stuck or not working or the parts connecting it could be disconnected or broken. You will have to observe to see if any parts are moving and if any noise is coming from the solenoid

I have a GE TFX25ppbaaa refrigerator. The ice maker corkscrew motor would run and provide crushed ice only. The corkscrew motor would not run when the switch was moved to the cubed ice ( half moon) setting.

I replaced the large Light/ water/ crushed ice/cubed ice switch , ( product service number GEH WR55X129 ) ( part number GE 162D6372 PO17 )and it fixed the problem. Cost was about $43.00.

the switch or the bin

Behind the ice bucket is a metal housing that holds the auger motor and solenoid.  The solenoid is bad.  When you go for cubed ice that solenoid should pull up the metal rod on the ice bucket so full cubes will come out.  First check to make sure the metal rod on the ice bucket isn't somehow caught under the solenoid and not letting if move up and down.  You can take out the ice bucket and press for cubed ice.  You should hear a loud clunk noise.  If not then you know the solenoid is not working.