How do I replace the shattered glass in my GE oven door

No doubt this is a double paned glass panel. Two panes of glass with a divider strip separating the two for a "thermal break". Okay, you will need to remove the door from the hinges, and along the sides of the door, or possibly under the door gasket, you will find multiple screws that hold the two sandwiched halves of the door together. There should be a front panel, formed sheet steel, and an inner formed sheet steel panel which is coated with porcelin. When you have the front and back halves of the door separated, inside of one or maybe both of the panels you will find the clips, screws, or materials that hold this glass panel in place. Possibly it is in it's own frame, and the frame and glass both remove as one unit. Then it will be a matter of contacting Customer Service and Parts for your product, giving the Model #, Serial # and any other data that may be needed in order to replace the part with the correct one. Since this should be tempered glass, it will be quite heavy and at least 1/4" thick or so. The "thermal break" or space between the panes is so that heat does not transfer readily to the outside panel. Watch for any electrical connections for a door switch for the oven lamp, and be careful when removing the springs which allow the door to close and seal when in the closed position. And it might be helpful to take some photos of the disassembly process so that you can have a reference when you are ready to re-install the door. Be careful when removing the broken glass, and dispose of this carefully. Take your time, be patient, and don't force any thing, and you should be fine. Good lock. Kindest regards, Slats.