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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1168 (Engine Controls - 6.0L - Alternative Fuels (Introduction)) >> Repair Instructions >> Intermediate Pressure Regulator (IPR) Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra and 2004 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief Procedure .
    2. CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.
  2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure (Single Battery) Battery Negative Cable Disconnect/Connect Procedure (Auxiliary Battery) in Engine Electrical in the C/K Pickup service manual.
    3. Fig 1: Identifying Low Pressure Lock-Off (LPL) Solenoid Components
    GM756969Courtesy of GENERAL MOTORS CORP.
  3. Disconnect the low pressure lock-off (LPL) solenoid electrical connector (5).
  4. Disconnect the fuel inlet line (1) from the LPL fitting (2).
    5. Fig 2: Identifying IPR Fuel Outlet Lines Components
    GM757010Courtesy of GENERAL MOTORS CORP.
  5. Remove the intermediate pressure regulator (IPR) fuel outlet line hold-down nut (6).
  6. Remove the fuel outlet line hold down (4).
  7. Disconnect the IPR fuel outlet lines (5, 8) from the IPR (2).
    8. Fig 3: Identifying IPR/LPL Bracket Components
    GM756975Courtesy of GENERAL MOTORS CORP.
  8. Remove the IPR/LPL bracket nuts (3).
  9. Remove the IPR/LPL assembly from the vehicle.
    10. Fig 4: Identifying IPR/LPL Assembly Components
    GM762368Courtesy of GENERAL MOTORS CORP.
  10. Remove the bolts (3) that retain the IPR/LPL assembly (1, 4) to the bracket (2).
    11. Fig 5: Identifying Line Union, IPR and LPL
    GM762374Courtesy of GENERAL MOTORS CORP.
  11. While holding the line union (2) rotate and remove the IPR (3) or the LPL (1) as required.
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