Look inside the battery compartment and check the label. There may be a version code listed on that label. The GE remotes were manufactured by Jasco and the code lists are here: http://jascoproducts.com/support/ge-universal-remote-codes
. Use the correct code list for the version for your remote. Note: these codes work for remotes sold in 2006 and later. For older GE remotes that use a 3-digit code, try this site: http://www.eliztech.com/remotes/ge-new-3digit-tv-codes.php .
I hope this helps.
(the remote control codes will often be limited to TVs that were sold at least 6 months before the remote was programmed. If your TV is newer than the remote, you may need to update your universal remote.)