Took the beast in this week cuz the driver's seat heater wasn't working. Service mgr had previously told me that GM uses wire elements and they break. Turns out that when they went to the cooled seats w/ a fan, they put two more fans in for the heat. Their replacement almost paid for my GMPP extended warranty.

Ironically this happened right after I got it back earlier for replacement of the Nav/Radio. It had a buzzing noise when off. No, it wasn't the DVD drive. I suspect there's a cooling fan in there someplace but nobody knew.

 

Its a gamble, I had GMPP on one of my first new cars...(85 Pontiac Fiero) the AC compressor went out and the warranty covered it all, even down to the belt, almost to the penny cost of the warranty... No other issues after that, so I guess I paid up front for that one failure... never have purchased one since...
I do think the GMPP is the best choice for those that want extended warranties...