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Home >> Hummer >> 2009 >> H3 Alpha >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 5.3L - Introduction >> Repair Instructions >> Fuel Injection Fuel Rail Assembly Replacement >> Installation Procedure
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Installation Procedure

Fig 1: View Of Fuel Rail Stop Bracket & Bolt
GM260098Courtesy of GENERAL MOTORS CORP.
WARNING: The fuel rail stop bracket must be installed onto the engine assembly. The stop bracket serves as a protective shield for the fuel rail in the event of a vehicle frontal crash. If the fuel rail stop bracket is not installed and the vehicle is involved in a frontal crash, fuel could be sprayed possibly causing a fire and personal injury from burns.
    Fig 2: Fuel Rail Bolts
    GM1898207Courtesy of GENERAL MOTORS CORP.
  1. Lubricate NEW lower injector O-ring seals with clean engine oil.
  2. Install the NEW O-ring seals (3) onto each injector.
  3. Install the fuel rail (2) to the intake manifold.
  4. Apply a 5 mm (0.2 in) band of threadlock GM P/N 12345382 (Canadian P/N 10953489) or equivalent, to the threads of the fuel rail bolts (1).
    5. CAUTION: Refer to Fastener Caution .
  5. Install the fuel rail bolts (1) and tighten to 10 N.m (89 lb in).
  6. Tighten the fuel rail retainer clip screws to 3.8 N.m (34 lb in).
    7. Fig 3: Fuel Hose/Pipes Replacement - Chassis
    GM1897742Courtesy of GENERAL MOTORS CORP.
  7. Connect the chassis fuel feed line quick connect fitting (2) to the fuel rail. Refer to Metal Collar Quick Connect Fitting Service .
    8. Fig 4: Engine Wiring Harness Electrical Connectors, Harness Bracket & Bracket Nut
    GM1897775Courtesy of GENERAL MOTORS CORP.
  8. Install the EVAP canister purge solenoid valve. Refer to Evaporative Emission Canister Purge Solenoid Valve Replacement .
  9. Position the engine wiring harness as needed, and install the engine wiring harness bracket (2) to the stud.
  10. Install the engine wiring harness bracket nut (1) and tighten to 9 N.m (80 lb in).
  11. Connect the engine wiring harness electrical connectors (3) to the fuel injectors.
    12. Fig 5: Engine Wiring Harness Electrical Connector & Generator
    GM1897776Courtesy of GENERAL MOTORS CORP.
  12. Connect the engine wiring harness electrical connector (4) to the ignition coil harness.
  13. Connect the engine wiring harness electrical connector (3) to the EVAP canister purge solenoid valve.
  14. Connect the engine wiring harness electrical connector (1) to the generator.
    15. Fig 6: Air Cleaner Outlet Duct
    GM1897252Courtesy of GENERAL MOTORS CORP.
  15. Connect the engine wiring harness electrical connector (3) to the ignition coil harness.
  16. Connect the engine wiring harness electrical connectors (1) to the fuel injectors.
  17. Connect the engine wiring harness electrical connector (2) to the throttle body.
    18. Fig 7: Engine Wiring Harness Clip & Ignition Coil Bracket Stud
    GM1897774Courtesy of GENERAL MOTORS CORP.
  18. Install the engine wiring harness clip (1) to the ignition coil bracket stud (2).
    19. Fig 8: Engine Wiring Harness Clip & Ignition Coil Bracket Stud
    GM1897773Courtesy of GENERAL MOTORS CORP.
  19. Install the engine wiring harness clip (1) to the ignition coil bracket stud (2).
    20. Fig 9: Positive Crankcase Ventilation (PCV) Foul Air Hose
    GM1897777Courtesy of GENERAL MOTORS CORP.
  20. Install the PCV foul air hose (1).
    21. Fig 10: Engine Wiring Harness Electrical Connector & MAP Sensor
    GM1897166Courtesy of GENERAL MOTORS CORP.
  21. Connect the engine wiring harness electrical connector (1) to the MAP sensor.
  22. Install the air cleaner outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement .
  23. Install the fuel fill cap.
  24. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  25. Use the following procedure in order to inspect for leaks:
    1. Turn the ignition ON, with the engine OFF, for 2 seconds.
    2. Turn the ignition OFF for 10 seconds.
    3. Turn the ignition ON, with the engine OFF.
    4. Inspect for fuel leaks.
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