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Home >> Cadillac >> 2010 >> STS 3.6 V, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls And Fuel - 3.6L - Repair Instructions >> Repair Instructions >> Fuel Injector and Fuel Rail Replacement >> Removal Procedure

Removal Procedure

WARNING: Refer to Gasoline/Gasoline Vapors Warning .
  1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief (High Pressure Pump - LLT) .
  2. Remove the upper intake manifold with the lower intake manifold. Refer to Upper Intake Manifold Replacement (LP1, LY7) .
    3. Fig 1: Quick-Connect Fitting Retainer
    GM1348200Courtesy of GENERAL MOTORS CORP.
  3. Remove the fuel pipe retaining clip.
    4. Fig 2: EVAP Purge Line, Fuel Feed Pipe & Purge Valve Solenoid Purge Line
    GM1348201Courtesy of GENERAL MOTORS CORP.
  4. Disconnect the fuel feed pipe (2) from the fuel injector rail. Refer to Metal Collar Quick Connect Fitting Service .
    5. WARNING: Refer to Safety Glasses and Compressed Air Warning .
  5. Use compressed air in order to remove debris from the area where the fuel injectors enter the intake manifold.
    6. Fig 3: Fuel Rail Bolts
    GM1285194Courtesy of GENERAL MOTORS CORP.
  6. Remove the fuel rail bolts.
    7. 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.
  7. Remove the fuel rail with the fuel injectors.
    8. Fig 4: Fuel Injector Electrical Connector Lock
    GM1285196Courtesy of GENERAL MOTORS CORP.
  8. Disengage the fuel injector electrical connector lock.
    9. Fig 5: Fuel Injector Electrical Connector
    GM1285198Courtesy of GENERAL MOTORS CORP.
  9. Disconnect the fuel injector electrical connector.
    10. Fig 6: Fuel Injector Retainer Clip
    GM1285199Courtesy of GENERAL MOTORS CORP.
  10. Remove the fuel injector retainer clip.
    11. Fig 7: Fuel Injector
    GM1285197Courtesy of GENERAL MOTORS CORP.
  11. Remove the fuel injector.
  12. Remove and discard the fuel injector seals.
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