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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1966 (Engine Controls And Fuel - 3.6L (LCS) - Introduction) >> Repair Instructions >> Fuel Injector Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  1. Relieve the high side fuel system pressure. Refer to Fuel Pressure Relief (with CH 48027-100) or Fuel Pressure Relief (w/o CH 48027-100) .
  2. Remove the drive motor generator power inverter module. Refer to Drive Motor Generator Power Inverter Module Removal and Installation
    3. NOTE: The fuel injectors have an alignment feature, note the position of the injectors alignment for installation.
  3. Remove the fuel injection fuel rail assembly. Refer to Fuel Injection Fuel Rail Assembly Replacement - Bank 1  or Fuel Injection Fuel Rail Assembly Replacement - Bank 2 .
    4. Fig 1: Fuel Injector Retaining Rings
    GM2004445Courtesy of GENERAL MOTORS CORP.
  4. Remove and discard the three fuel injector retaining rings (1).
    5. Fig 2: Direct Fuel Injectors, Harness And Electrical Connector
    GM2004498Courtesy of GENERAL MOTORS CORP.
  5. Remove the direct fuel injectors and harness (1) as an assembly, and disconnect the electrical connector (2). If necessary, use the J 2619-01  with the J-37281-A  in order to remove the direct fuel injectors evenly. See Special Tools .
    6. Fig 3: Identifying Fuel Injector Components
    GM1977756Courtesy of GENERAL MOTORS CORP.
  6. Remove and discard the following components from the fuel injectors (4).
    • Upper O-ring Seal (1)
    • Plastic Spacer (2)
    • Retaining Ring (3)
    • Isolator Cup (5)
    • Teflon Seal (6)
  7. Inspect the fuel rail injector bores and clean with J 39313  , and EN-47909  , if required. See Special Tools .
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