I am trying to find out how I should test the sensor Sensor kit Part Number: AP2023913 made by GE and/or the Control Module (CONTROL T09 SET SERV Part Number: AP3993776 made by GE.) The problem I am having is a very large oven temperature differential when I try to bake something. For instance, if I set the bake temp to 275F it goes up to about 260F and then cuts off. It does not come back on until the temp in the oven is 240F, a temperature differential of 35F degrees. It may be cheaper to go out and buy a new range than trying to replace these 2 very expensive parts.