Fuel Injection Control Module
WARNING: This page is about a different car, the 2003 GMC Savana and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
On Bi-Fuel and CNG engines, an Fuel Injection Control Module (FICM) is used. The FICM is located on the left side of the radiator support. See Figure.