2000 Envoy, passenger heated seat no go

Anyone have any knowledge on this?! Replace the switch or is there a fuse/relay?!

I only had a few moments to glance at the manual, but it appears to have only one relay in the engine bay. The driver's side heated seat works.

I am having the same problem. I notice that the switch is not lighting up, but on the driver side it is. I will try to do a little more research and find out if it is a bad switch or no power.