Unlatching a GE TrueTemp oven can be done by waiting for the cleaning cycle to end and unlatching it manually, resetting the oven cleaning cycle to try it again, or unplugging the oven and plugging it back in. If all else fails, consult a GE appliance technician for help.
The self-latching function in GE TrueTemp ovens is built into the self-cleaning cycle of the oven. When the oven is set to self-clean, the door locks with a special latch that does not open until the cycle is complete. This latch eventually releases, allowing the door to be unlocked, when the timer runs out on the cleaning cycle. If this does not happen, the latch may not be functioning correctly.
Unlatching the oven door means resetting the mechanism that holds the latch in place. Doing this requires resetting the oven so that it releases the latch mechanism and allows the door to be unlocked like normal. Starting another cleaning cycle may reset the latch at the end of the cycle as normal, and the latch may be released by unplugging the oven itself the wall and waiting for the latch to undo itself. Attempting to force the latch may damage the mechanism, so it is best to consult a GE professional or appliance technician to troubleshoot the problem if these methods have not worked.