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Home >> Chevrolet >> 2012 >> Corvette Base, 2D Convertible, Standard Trans, Trans Mfr CD 6L85M/MM6 >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls/Fuel - Repair Instructions >> Repair Instructions >> Fuel Injection Fuel Rail Assembly Replacement (6.2L LS9 - With Supercharger) >> Removal Procedure
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Removal Procedure

  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (LS7 or LS9) .
  2. Remove the upper intake cover. Refer to Upper Intake Manifold Sight Shield Replacement (6.2L LS9 - With Supercharger) .
  3. Relieve the fuel system pressure. Refer to Fuel Pressure Relief (Without CH 48027) , Fuel Pressure Relief (CH 48027) 
  4. Remove the front charge air cooler manifold. Refer to Charge Air Cooler Replacement
    5. Fig 1: Identifying Fuel Injection Harness Connectors
    GM2157866Courtesy of GENERAL MOTORS COMPANY
  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: Identifying Ignition Coil Harness Connector
    GM2157868Courtesy of GENERAL MOTORS COMPANY
  10. Disconnect all 8 ignition coil harness connectors (1).
    11. Fig 3: View Of Fuel Injector Wiring Harness
    GM2157870Courtesy of GENERAL MOTORS COMPANY
  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: View Of Fuel Rail & Injectors Wiring Harnesses
    GM2054131Courtesy of GENERAL MOTORS COMPANY
  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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