The GE website contains instructions for all GE ovens. Visit the website at GEAppliaces.com and choose the support tab. Then, select "Manuals and Literature," which goes to the instruction booklet search page. Enter the oven model number to access the instruction manual.
Find the model number of the oven on the appliance rating plate. Its location depends on the model of the oven. For wall ovens, open the door and look on the right front face. To find the model number on a GE Advantium oven, look behind the door in the upper right corner. The plate is affixed to the front frame.