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Home >> Chevrolet >> 2010 >> Corvette Base, 2D Convertible, Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls And Fuel - 6.2L Or 7.0L - Repair Instructions >> Repair Instructions >> Fuel Injection Fuel Rail Assembly Replacement (LS9) >> Removal Procedure

Removal Procedure

  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (LS3) or Battery Negative Cable Disconnection and Connection (LS7 or LS9) .
  2. Remove the upper intake cover. Refer to Upper Intake Manifold Sight Shield Replacement (LS9) or Upper Intake Manifold Sight Shield Replacement (w/o LS9) .
  3. Relieve the fuel system pressure. Refer to Fuel Pressure Relief (Without CH 48027)  or Fuel Pressure Relief (With CH 48027) 
  4. Remove the front charge air cooler manifold. Refer to Charge Air Cooler Replacement
    5. Fig 1: Fuel Injection Harness Connectors & PCV Tube
    GM2157866Courtesy of GENERAL MOTORS CORP.
  5. Disconnect the fuel injection Harness connectors (1, 4).
  6. Disconnect the MAP sensor harness connector (2).
  7. Disconnect the supercharger air output sensor harness connector (3).
  8. Disconnect the intake temperature sensor harness connector (5).
  9. Disconnect and place aside the PCV tube (6).
    10. Fig 2: Ignition Coil Harness Connector
    GM2157868Courtesy of GENERAL MOTORS CORP.
  10. Disconnect all 8 ignition coil harness connectors (1).
    11. Fig 3: Fuel Rail Components & Fuel Injector Wiring Harness
    GM2157870Courtesy of GENERAL MOTORS CORP.
  11. Remove the front fuel rail fastener (1).
  12. Remove the fuel rail ball stud fasteners (2).
  13. Carefully disengage the fuel injectors (3) from the supercharger.
  14. Remove the fuel rail with the fuel injector harness (5) from the engine.
    15. Fig 4: Fuel Rail & Injection Wiring Harness
    GM2054131Courtesy of GENERAL MOTORS CORP.
  15. Remove the fuel injection wiring harness (2, 3) from the fuel rail (1) and fuel injectors.
  16. If replacing the fuel rail of an injector. Refer to Fuel Injector Replacement .
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