The following article is about troubleshooting Pontiac Fiero Cruise Control System written by Oliver Scholz. The Fiero used two fundamentally different approaches to the cruise control. The 1984 – 1986 4 cylinders and all V6 Fieros use a separate cruise control module. It is located behind the carpet pm te driver side center console. The second system involves the 1987 – 1988 4 cylinder Fieros with DIS. On this cars, the ECM takes care of the cruise control functions. The advantage is that you can troubleshoot the system with scantool.