I purchased this 2005 Z71Suburban back in 11/29/09 and also purchased extented warranty. This morning when I first started the vehicle, it sounded as if it got an extra boost of energy. Not a normal startup. It did not start the same way as it usually does. I thought nothing of it until going down the road and noticed the heated seat was on for the driver side. After a while it was OUT of CONTROL going thru all the heat levels. I came home and heard a clicking sound from under the seat. Looking under the seat it looked like the sound was coming from a sliver looking cylinder about 4" long right in the middle of the seat. I then remove the refuse, which is labeled IGN-3 and is for the ignition/heated seats. The Heated seat for the driver side was still coming on, not sure why. After checking other places in my owner manual, I found no other locates for a heated seat fuse. I put the ues back.
I called the dealer and they can not say anything until they see it and charge me $$$$$. The extented warranty covers everthing except heated seats "go figure". So my next step is to find what the problem is and if I can replace it my self. Any thoughts would be helpful.