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 MANUALSCHEVROLET2001CHEVY EXPRESS G2500, VAN CARGO EXTENDED, 5.7 R, L31/KL8REPAIR AND DIAGNOSISENGINE PERFORMANCEREMOVE, OVERHAUL & INSTALLENGINE CONTROLS - REMOVAL, OVERHAUL & INSTALLATIONFUEL SYSTEMS (DIESEL)FUEL RAIL ASSEMBLYREMOVAL (6.6L)
2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8
Removal (6.6L)
2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8SECTION Removal (6.6L)
- Remove negative battery cable. Drain cooling system. Remove upper radiator hose and clamps. Remove bolt holding positive battery cable junction block and move out of way. Remove turbo-to-intercooler hose and set aside. Remove glow plug relay connectors and remove bracket. Disconnect 24-pin and 40-pin engine connectors.
- Remove fuel pressure line, return line and "L" bracket. Remove Positive Crankcase Ventilation (PCV) line and set aside. Remove water pipe outlet at thermostat housing. Remove serpentine belt. Remove A/C compressor and position aside without disconnecting lines.
- Remove line from junction block to injector pump. Loosen and remove high pressure line at back end of fuel rail. Remove junction block. Loosen lines at injectors first and then loosen lines at fuel rail. Mark high pressure lines before removing for reference during installation. Remove 3 fuel rail bolts and remove fuel rail from vehicle.
RENDER: 1.0x
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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.