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Home >> Chevrolet >> 2007 >> Chevy Express G2500, Van Cargo, 6.6 6 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Engine Control System & Fuel System - 4.8L, 5.3L, And 6.0L - Introduction (2 Of 2)) >> Repair Instructions >> Fuel Rail Outlet Pipe Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
IMPORTANT: The fuel rail for the 5.3L regular production option (RPO) L59 (VIN Z) is compatible with fuel that has a composition of up to 85 percent Ethanol (E85). Because of this, the fuel rail will be serviced as an entire assembly that includes both left and right rail assemblies and the fuel return pipe.
    Fig 1: View Of Rear Of Engine Fuel Pipe Connections
    GM300360Courtesy of GENERAL MOTORS CORP.
  1. Relieve the fuel system pressure. Refer to the Fuel Pressure Relief (With CH 48027) or Fuel Pressure Relief (Without CH 48027) .
  2. Disconnect the fuel feed (1) and fuel return (2) pipes from the fuel rail.
    3. Fig 2: Exploded View Of Fuel Rails & Injector Components
    GM350543Courtesy of GENERAL MOTORS CORP.
  3. Remove the retaining clip attaching screw (4).
  4. Remove the crossover fuel pipe retainer clip (5).
  5. Remove the fuel return pipe attaching screw (3) and the fuel return pipe retainer (2).
  6. Remove the fuel return pipe (1).
  7. Remove and discard the fuel return pipe O-ring (6).
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