Mid/rear Seats Assembly problems of the 2005 Chevrolet Suburban

Driver side seat heater randomly comes on and goes off. Majority of the time the heater stays on constantly and becomes uncomfortable. This happens more especially in wet conditions and when you attempt to turn the heated seat off, the controls won't work. This issue happens when the SUV is started, continues while idling and while driving. Some days it is hours before it will go off. Other days it will not go off. The scary thing is you can hear the dashboard clicking when the heater turns on and off, constantly cycling though high to low, back of seat to bottom of the seat. Adjusting the seat in any way does not help. I think this is a concern due to the fact that it turns off and on and you can hear it cycle through. It's also a major concern because the heat stays on without any way to turn it off. This started a week after I purchased this vehicle and has continued since October 2016.