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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 994 (Engine Mechanical - 6.6L (LLY)) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Fuel Pipes and Fuel Rail Removal

Fuel Pipes and Fuel Rail Removal

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the fuel feed pipe attaching nuts and bolts.
  2. Remove the fuel feed pipe.
    3. Fig 1: View Of Fuel Feed Pipe & Bolts
    GM1335584Courtesy of GENERAL MOTORS CORP.
  3. Disconnect the fuel rail balance pipe from fuel rails.
  4. Remove the fuel rail balance pipe bolts.
  5. Remove the fuel rail balance pipe.
    6. Fig 2: View Of Fuel Rail Balance Pipe & Bolts
    GM1335586Courtesy of GENERAL MOTORS CORP.
  6. Remove the left fuel return hose.
    7. Fig 3: View Of Fuel Return Hose & Injectors
    GM1335588Courtesy of GENERAL MOTORS CORP.
  7. Remove the right fuel return hose.
    8. Fig 4: View Of Right Fuel Return Hose & Injectors
    GM1335592Courtesy of GENERAL MOTORS CORP.
  8. Disconnect the fuel hoses from the fuel injector pump.
    9. Fig 5: View Of Fuel Hose Connections
    GM1335595Courtesy of GENERAL MOTORS CORP.
  9. Remove the distribution block and fuel line assembly bolts.
  10. Remove the distribution block and fuel line assembly.
    11. Fig 6: View Of Distribution Block, Fuel Line Assembly & Bolts
    GM1335596Courtesy of GENERAL MOTORS CORP.
  11. Remove the fuel pipe assembly bracket bolts.
  12. Remove the fuel pipe assembly bracket.
    13. Fig 7: View Of Fuel Pipe Assembly Bracket
    GM1335598Courtesy of GENERAL MOTORS CORP.
  13. Remove the coolant pipe bolt and nut.
  14. Remove the coolant pipe.
    15. Fig 8: View Of Coolant Pipe
    GM1335600Courtesy of GENERAL MOTORS CORP.
  15. Remove the left fuel rail to pump pipe.
    16. Fig 9: View Of Left Fuel Rail At Pump Pipe
    GM1335603Courtesy of GENERAL MOTORS CORP.
  16. Remove the EGR mounting bracket bolts.
  17. Remove the EGR mounting brackets.
    18. Fig 10: View Of EGR Mounting Brackets & Bolts
    GM1335604Courtesy of GENERAL MOTORS CORP.
  18. Using compressed air to blow away any debris between the fuel injector line and the fittings. Wipe clean the fittings of debris.
    19. Fig 11: View Of Fuel Injector Line & Fittings
    GM1336209Courtesy of GENERAL MOTORS CORP.
    NOTE: DO NOT use compressed air to clean debris from the fuel injector inlet after the fuel line is removed. Using compressed air can allow debris to enter the fuel injector inlet and damage the fuel injector.
  19. Spray lithium grease, GM P/N 12346293 or equivalent, between the fuel injector line and fitting to contain any debris during removal.
  20. Remove the left fuel injector pipes.
    21. Fig 12: View Of Left Fuel Injector Pipes
    GM1335608Courtesy of GENERAL MOTORS CORP.
  21. Remove the right fuel injector pipes.
    22. Fig 13: View Of Fuel Injector Pipes
    GM1335614Courtesy of GENERAL MOTORS CORP.
  22. Remove the left fuel rail and bracket bolts.
  23. Remove the left fuel rail and bracket.
    24. Fig 14: View Of Left Fuel Rail And Bracket
    GM1335616Courtesy of GENERAL MOTORS CORP.
  24. Remove the right fuel rail bolts.
  25. Remove the right fuel rail.
    26. Fig 15: View Of Right Fuel Rail
    GM1335617Courtesy of GENERAL MOTORS CORP.
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