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 32 (ENGINE CONTROLS - REMOVE/INSTALL/OVERHAUL)FUEL SYSTEM (DIESEL)FUEL PUMPREMOVAL & INSTALLATION (ELECTRIC)
1987 Chevrolet Hi-Cube 6.2 J, 475/M40
Removal & Installation (Electric)
1987 Chevrolet Hi-Cube 6.2 J, 475/M40SECTION Removal & Installation (Electric)
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 terminal. Disconnect electrical wiring from fuel pump and fuel pump support bracket.
- Disconnect fuel lines from fuel pump. Remove support bracket screws and remove support bracket from fuel lines. Remove fuel pump and bracket from frame rail. To install, reverse removal procedure. Check for fuel leak at fuel line fittings.
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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.