Why are your heated seats in your envoy not working?
There can be many reasons why the heated seats in a car stopped working. A few reasons are, the fuse could be blow, the wiring could be out, the switch could be broken, or it is not getting enough electricity.
Copy & Paste link below I now it's not a ford but it give you an idea on how and what to do. Regarding your heated seat repairs. Repairing the heated seats on a Range Rover ... Introduction Diagnostics Official Procedure Bypassing a Failed Seat Bottom Element www.rangerovers.net/repairdetails/seats/seatheat.html