LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2001 >> Sierra 2500 HD, 2D Pickup, 6.6 1, 4WD, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 6.6L - Repair Instructions >> Repair Instructions >> Fuel Pressure Regulator Replacement >> Installation Procedure

Installation Procedure

IMPORTANT:

If the pressure regulator is being re-used, check the O-rings for damage. If the O-rings are damaged, install NEW O-rings.

    Fig 1: Fuel Pressure Regulator
    GM901301Courtesy of GENERAL MOTORS COMPANY
    IMPORTANT:

    If the regulator is installed at an angle the O-rings may be damaged, resulting in possible fuel leakage.

  1. Lubricate and install NEW O-rings onto the regulator. Lubricate the O-rings with clean, NEW engine oil.
  2. Install the fuel pressure regulator (1).
    3. Fig 2: Fuel Pressure Regulator Screws
    GM901300Courtesy of GENERAL MOTORS COMPANY
  3. Refer to Fastener Notice in Cautions and Notices.

    Install the 3 fuel pressure regulator screws (1) using a T25 TORX®.

    Tighten 

    • Tighten the screws a first pass to 4 N.m (35 lb in).
    • Tighten the screws a final pass to 7 N.m (62 lb in).
    4. Fig 3: Injection Pump Inlet Hose At Fuel Feed Distribution Block
    GM901298Courtesy of GENERAL MOTORS COMPANY
  4. Install the injection pump inlet hose to the fuel feed distribution (leak-off) block.
  5. Position the injection pump inlet clamp.
    6. Fig 4: View Of Crankcase Ventilation Hoses At Valve Rocker Arm Covers
    GM687021Courtesy of GENERAL MOTORS COMPANY
  6. Install the PCV hose to both valve covers.
    7. Fig 5: Oil Level Electrical Connector
    GM788846Courtesy of GENERAL MOTORS COMPANY
  7. Connect the oil level sensor harness electrical connector (1).
    8. Fig 6: Fuel Pressure Regulator Electrical Connector
    GM786996Courtesy of GENERAL MOTORS COMPANY
  8. Connect the fuel pressure regulator electrical connector (1).
    9. Fig 7: Left Rear Fuel Injector Electrical Connector
    GM786988Courtesy of GENERAL MOTORS COMPANY
  9. Connect the left rear fuel injector electrical connector (1).
    10. Fig 8: Left Front Fuel Injector Electrical Connector
    GM786986Courtesy of GENERAL MOTORS COMPANY
  10. Connect the left front fuel injector electrical connector (1).
    11. Fig 9: Fuel Rail Temperature Sensor Electrical Connector
    GM786977Courtesy of GENERAL MOTORS COMPANY
  11. Connect the fuel rail pressure sensor electrical connector (1).
    12. Fig 10: Glow Plug Relay Electrical Connectors
    GM786978Courtesy of GENERAL MOTORS COMPANY
  12. Connect the glow plug relay electrical connectors (1, 2, 3).
    13. Fig 11: BARO Sensor Electrical Connector
    GM739503Courtesy of GENERAL MOTORS COMPANY
  13. Connect the BARO sensor electrical connector (1).
    14. Fig 12: ECT Sensor Electrical Connector
    GM740506Courtesy of GENERAL MOTORS COMPANY
  14. Connect the ECT sensor electrical connector (1).
    15. Fig 13: View Of Engine-To-Chassis Harness Connector & Bracket Bolts
    GM674680Courtesy of GENERAL MOTORS COMPANY
  15. Install the main harness to the bracket.
  16. Install both main harness electrical connector to the bracket bolts (1).

    Tighten 

    Tighten the bolts to 21 N.m (15 lb ft).

    17. Fig 14: View Of Main Engine Harness Electrical Connectors
    GM674653Courtesy of GENERAL MOTORS COMPANY
  17. Connect both main harness electrical connectors.
  18. Install the water outlet tube. Refer to Water Outlet Tube Replacement in Engine Cooling.
    19. Fig 15: View Of A/C Compressor & Bolts
    GM652573Courtesy of GENERAL MOTORS COMPANY
  19. Position the A/C compressor.
  20. Install the A/C compressor bolts.

    Tighten 

    Tighten the bolts to 53 N.m (37 lb ft).

  21. Install the drive belt. Refer to Drive Belt Replacement in Engine Mechanical - 6.6L.
  22. Connect the A/C cut out switch electrical connector.
  23. Connect the A/C compressor clutch electrical connector.
  24. Install the air intake pipe. Refer to Air Intake Pipe Replacement .
scientia non olet · About LEMON Manuals