Can anyone figure this out?? I have a 97 Seville that the traction contol has to be disengaged via button in glovebox at every start-up. If not disengaged it kicks in partially and grinds really bad. The dealer tested it and said the sensors on each wheel were good, the transmission contol sensor was replaced (no effect). Next, the spark plug wires might be causing the problem. I had the plugs and plug wires replaced (so effect).