Move Demonstrates Use of New Economy Tools to Accelerate Cost Savings Delphi Automotive Systems (NYSE: DPH) announced today that it has signed a letter of intent to join Covisint, the global Internet exchange being formed by General Motors, Ford, DaimlerChrysler, Renault and Nissan. Richard L. Radecki, corporate director of the Delphi e-business program office, made the announcement.