That's what I discovered when the shop swapped my OEM wheels for the new set. No TPMS sensors in either, and no error indication. I had ordered TPMS through Turner for the 2nd set of wheels, and their compatibility function said I needed them for the 08, but apparently not.
http://www.turnermotorsport.com/p-12...nsor-tpms.aspx
Maybe it's a Canadian thing? Even though they were made in the same US facility, mine's a version that was built for the Canadian market.