A:Answer This icemaker kit will not work with your refrigerator model GTL21KCXABS, as your refrigerator has a factory-installed icemaker. If you are experiencing issues with your factory-installed icemaker, we recommend checking out the Troubleshooting Tips section of your Owner’s Manual for ways to resolve common issues. If those don’t help, we recommend scheduling service online by visiting the GE Appliances website or by calling 833-4BODEWELL (833-426-3393) M-F 8AM-8PM ET, Sat-Sun: Closed.