GE Profile double wall oven, top unit was not heating to the correct temperature. Replaced the temperature sensor by removing the oven door, one screw in the sensor and the two screws holding the top oven element in place using a 1/4" nut driver. The oven element does not need to be removed, but it needed to be lose to get the sensor wire through the hole in the oven wall. The new sensor corrected the problem. Total time spent on the replacement was about 20 minutes. Ordering the new sensor was easy. The web site was clear and the drawings of the appliance helped identify the correct part. Shipping was very quick. I received the part in three days.