I found a few sources that allegedly fit with OE seats but have not bought any yet. I did find a vendor that stated it had heat pads that specifically worked with the grooves of the GM seats (but lost that link). If you want the links that I have, will gladly post them; otherwise, a search will quickly give results.
Hmm Mike. Guess I could have taken a few pics along the way. My bad. Here is a pic of the elements that came out of the truck. The date on the elements say June 25,2004 so I guess they are original to the truck. Not bad.
Can anyone guess which one is from the drivers seat?
No Tanner, the replacement elements are the same size. As for the burned areas...yeah it looked real bad when I pulled them out. The leather was burnt on the inside of the seats. They lived a good life. Nice to have warm seats again.