Hi, My name is Kim. I recently purchased a 2000 Deville DTS. I had to service it last week (replaced water-cooled alternator at 58,000 miles), and when the mechanic (not a dealer) brought it down off the rack, the message center said to service the suspension system. The mechanic used a scanner, but couldn't find any codes. He thought it might be a sensor that needed to be reset. I can't tell any difference in the ride. Any ideas anybody?