Unfortunately, due to the pandemic this model is not currently being produced. Because of increased demand for some appliances like freezers and supply chain issues, manufacturers have limited production of some models, especially black stainless steel.
From the tech sheet, this is how to reset your dishwasher: To quickly advance through customer cycles, invoke the Rapid Advance mode by pressing HIGH TEMP - HEATED DRY - HIGH TEMP - HEATED DRY, after starting the cycle. Then, press START/RESUME to advance through cycle intervals. (Press SMART DRY in place of HEATED DRY.)
The oven thermostat is not going to hold and maintain a constant temperature of 350 degrees or any other set temperature. The oven temperature is going rise above the set temperature and it will fall below the set temperature in order to get an average temperature of 350 degrees.
I hope this helps! If you need a professional repair, call Sears Home Services at 1-800-4-MY-HOME.