Fuel Rail & Injectors: Removal

WARNING: This page is about a different car, the 2002 Pontiac Sunfire and 2002 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.

Release fuel pressure. See FUEL SYSTEM PRESSURE RELEASE (CNG) . Disconnect negative battery cable.
Remove CNG fuel module assembly. See CNG FUEL MODULE ASSEMBLY . Remove fuel rail bracket. See Fig 1. Disconnect pressure regulator vacuum hose. Remove fuel rail. Pull up on injector connector clip and disconnect harness connectors from injectors. Remove fuel injector retaining clips. Remove fuel injectors. Remove fuel injector "O" rings.

Fig 1: Locating Fuel Rail Assembly Components (2.2L - VIN 4)
Courtesy of GENERAL MOTORS CORP.