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HOMESERVICE MANUALSGMC2011SAVANA SPECIAL 4.8 AREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE MECHANICALFUEL SYSTEMENGINE CONTROLS AND FUEL - 4.8L, 5.3L, 6.0L - REPAIR INSTRUCTIONSREPAIR INSTRUCTIONSFUEL INJECTION FUEL RAIL CROSSOVER TUBE REPLACEMENTREMOVAL PROCEDURE
2011 GMC Savana Special 4.8 A

Removal Procedure

2011 GMC Savana Special 4.8 ASECTION Removal Procedure
NOTE:

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 the left and right rail assemblies and the crossover pipe rail.

    Fig 1: Rear Of Engine Fuel Pipe Connections
    GM300360Courtesy of GENERAL MOTORS CORP.
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Relieve the fuel system pressure. Refer to Fuel Pressure Relief (Without CH-48027) , Fuel Pressure Relief (CH-48027) .
  3. Disconnect the fuel feed (1) and the fuel return (2) pipes from the fuel rail.
    4. Fig 2: Expanded View Of Fuel Rails And Injectors
    GM350543Courtesy of GENERAL MOTORS CORP.
  4. Remove the fuel return pipe attaching screw (3) and the fuel return pipe retainer (2).
  5. Remove the fuel return pipe (1).
  6. Remove and discard the fuel return pipe O-ring (6).
  7. Remove the fuel pressure connection core assembly (24) from the crossover pipe rail (25).
  8. Remove the retaining clip attaching screw (22) and the crossover fuel pipe retainer clip (21).
  9. Remove the retaining clip attaching screw (4) and the crossover fuel pipe retainer clip (5).
  10. Remove the crossover pipe rail assembly (25) from the left hand rail assembly (14) and the right hand rail assembly (15).
  11. Remove and discard the crossover fuel pipe O-rings (7, 20).
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.