Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1987HI-CUBE 6.2 J, 475/M40REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 33 (ENGINE CONTROLS - REMOVE/INSTALL/OVERHAUL)FUEL SYSTEM (DIESEL)INJECTION PUMPREMOVAL ("P" SERIES)
1987 Chevrolet Hi-Cube 6.2 J, 475/M40
Removal ("P" Series)
1987 Chevrolet Hi-Cube 6.2 J, 475/M40SECTION Removal ("P" Series)
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 1994 GMC Vandura Special, 1994 GMC Vandura, 1994 GMC Rally Camper Special, 1994 GMC Rally, and 1994 GMC Forward Control. 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 injection pump mount nuts. Remove injection pump and gasket. See Figure.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.