wow.....an appliance question!! your model # did not return any results on google..... try going to geappliances.com they have a user manual section to put in your model # to search....It should be a soft Thermoplastic rubber that is pushed into a groove on the metal/plastic part of the outer trim.....be very carefu when removing with a screwdriver or preferably a thin, sold plastic screwdriver....make sure you have the new one before taking it out! ......dont take my word either...there should be plenty of appliance technicians on the internet that have "how-tos" guides......good luck!
i just came across a web site that may help you ( ifixit.com ) it was designed to help people fix their own items, thus saving money and saving our landfills. i haven't had the opportunity to use it though. give it a try if you can't get some answers on here.
To replace freezer door gasket on a GE refrigerator, you will first lift the front edge of the gasket to the corner to expose screws, which you will need to loosen. Secondly, loosen the screws working from the corner across going down. After that, begin to install the door gasket in reverse of how the old one was removed. Read more on http://cre8tor.hubpages.com/hub/How-to-Replace-the-Gasket-on-a-Refrigerator-Door.