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2015-18 CHEVROLET CITY EXPRESS CARGO VAN BODY BUILDER MANUAL
FUEL SYSTEMS
FUEL SYSTEM PRECAUTIONS
General
Modifications in the fuel system are not recommended, either in the circuit or the components.
WARNING:
When replacing fuel line parts, be sure to observe the following:
• Put a "CAUTION: FLAMMABLE" sign in the workshop.
• Be sure to work in a well-ventilated area and furnish workshop with a CO2 fire extinguisher.
• Do not smoke while servicing fuel system. Keep open flames and sparks away from the
work area.
WARNING:
• Before removing fuel line parts, carry out the following procedures:
• Put drained fuel in an explosion-proof container and put the lid on securely. Keep the
container in safe area.
• Release fuel pressure from the fuel lines. Refer to the
Procedure
• Disconnect the battery negative terminal.
• Always replace O-rings and clamps with new ones.
• Do not kink or twist hoses when they are being installed.
• After connecting the fuel tube quick connectors, make
sure the quick connectors are secure. Ensure that the
connector and resin tube do not contact any adjacent
parts.
• After installing tubes, make sure there is no fuel
leakage at connections in the following steps:
• Apply fuel pressure to fuel lines by turning ignition
switch ON (with engine stopped). Then check for fuel
leaks at connections.
• Start the engine and rev it up and check for fuel
leaks at connections.
• Use only a Genuine OEM fuel filler cap as a replacement.
If an incorrect fuel filler cap is used, the MIL may come
on.
• For servicing Evaporative Emission System parts, refer to
the EC section in the service manual.
• For servicing On Board Refueling Vapor Recovery
(ORVR) parts, refer to the EC section in the service
manual.
in this section.
Fuel Pressure Release
Pa g e | 91
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