A:Answer Hi - Thanks for reaching out to us regarding your GE Gas Range. We are sorry to hear the oven is not heating and apologize for any inconvenience this has caused. The glo-bar in the oven will cycle on and off with the oven temperature. When it cycles on to heat, the gas valve opens and the gas is ignited. When the oven is at temperature, the gas valve closes there are no longer flames. You only use gas and see flames in the oven when the oven is actively heating. A technician may be required for an accurate diagnosis. To schedule service online visit: https://www.geappliances.com/ge/service-and-support/service.htm - Also, by entering your model number at the following link, you'll get a full list of repair parts, including parts diagrams, of your range: https://www.geappliances.com/ge/parts/search/ - Keep in touch at GEAppliances.com. Sue