One frustration of owning an American car is that parts are discontinued way too soon. I own a 2005 Cadillac Deville with 152000 miles and original engine/trans. Runs great with no oil burning. I have owned the car since 2006 and love it with no plans to replace it in the near future. The frustration: The first few years I could get the filters for the heated/cooled seats but now I cant' find any from a dealer. Does anyone make custom filters or any filter to match ? EVERYTHING on this car works perfectly but the seat filter not being available frustrates me ! Thanks for any suggestions.