Injection Pump: Removal
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 1994 GMC Yukon, 1994 GMC Suburban, 1994 GMC Pickup, 1994 GMC Cab & Chassis, and 1994 GMC C3500 HD. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect negative battery cable. Remove intake manifold assembly. Install Protective Covers (J-29664-1) in intake ports. Remove fuel injection lines. Disconnect wiring, fuel return line, fuel supply line, and fuel injection lines at pump. Cap all openings.
- Remove A/C hose retainer bracket (if equipped). Remove oil filler tube and vent hose assembly. Remove grommet. Scribe or paint alignment mark on front cover and injection pump flange.
- Rotate engine to remove injection pump-to-drive gear retaining bolts accessible through oil filler neck hole. Remove the injection pump mounting nuts. Remove injection pump and gasket. See Figure.