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Home >> Chevrolet >> 2016 >> SS Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls And Fuel - 6.2L (LS3) - Repair Instructions >> Repair Instructions >> Fuel Injection Fuel Rail Assembly Replacement >> Removal Procedure
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Removal Procedure

  1. Remove the engine cover. Refer to Engine Cover Replacement .
  2. Relieve the fuel system pressure. Refer to the Fuel Pressure Relief .
  3. Clean the fuel rail assembly before disconnection the fuel connections.
  4. CAUTION:
    • Remove the fuel rail assembly carefully in order to prevent damage to the injector electrical connector terminals and the injector spray tips. Support the fuel rail after the fuel rail is removed in order to avoid damaging the fuel rail components.
    • Cap the fittings and plug the holes when servicing the fuel system in order to prevent dirt and other contaminants from entering open pipes and passages.
  5. Disconnect the fuel feed hose from the fuel rail. Refer to Fuel Injection Fuel Feed Hose Replacement .
  6. Fig 1: Injector Electrical Connectors
    GM1950743Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Observe the order sequence of the fuel injector electrical connectors (1).

  7. Disconnect the fuel injector electrical connectors (1) from the fuel injectors.
  8. Fig 2: Fuel Rail Components
    GM2291242Courtesy of GENERAL MOTORS COMPANY
  9. Using a suitable tool detach the engine electrical wiring harness from the fuel rail.
  10. Remove the fuel rail ground strap to intake manifold retaining bolt (2).
  11. Remove the fuel rail to intake manifold retaining bolts (1).
  12. Simultaneously lift both sides of the fuel rail (3) and remove the fuel rail assembly from the intake manifold.
  13. Fig 3: Fuel Injector O-Ring Seals
    GM1954075Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The fuel injector seals are single use items and must be replaced after the fuel injectors has been removed.

  14. Remove the fuel injector seals (2) from the fuel injectors (1) and discard.