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 G3500, VAN PASSENGER EXTENDED, 6.5 FREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 134 (ENGINE CONTROLS - REMOVAL & INSTALLATION)FUEL SYSTEMS (CNG)FILL VALVE-TO-UNION FILL LINEREMOVAL
2001 Chevrolet Chevy Express G3500, Van Passenger Extended, 6.5 F
Fill Valve-To-Union Fill Line: Removal
2001 Chevrolet Chevy Express G3500, Van Passenger Extended, 6.5 FSECTION Removal
WARNING: This page is about a different car, the 2003 Pontiac Sunfire and 2003 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The numbers in parenthesis correspond to numbered components in referenced illustrations.
- Relieve the CNG fuel system pressure. See FUEL SYSTEM PRESSURE RELEASE (CNG) .
- Disconnect the negative battery cable.
- Remove the fuel tank cover. See Figure.
- Remove the trunk trim panel.
- Remove the cargo net, the cargo net knobs and the left wheelhouse carpet.
- Loosen the fill valve boot clamp and peel back the boot. See Figure.
- Disconnect the fill line (3) at the fill valve (5). See Figure.
- Loosen the clamp at the tank vent boot and peel back the boot to expose the union. See Fig 1.
- Disconnect the fill line at the union.
- Remove the fill line from the vehicle.
RENDER: 1.0x
NO RELATED
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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.