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Installation Procedure

    Fig 1: Identifying Fuel Injector Components
    GM1977756Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Lubricate a NEW O-ring seal (1) with silicon free engine oil GM P/N 12345610 (Canadian P/N 993193) or equivalent.

  1. Install the following NEW components to the fuel injectors. Use steps 2 through 8 to install these components.
    • Upper O-ring Seal (1)
    • Plastic Spacer (2)
    • Retaining Ring (3)
    • Isolator Cup (5)
    • Teflon Seal (6)
    2. Fig 2: View Of Injector Tip & Installer Tool
    GM1829992Courtesy of GENERAL MOTORS COMPANY
  2. From the EN-48266 , position the EN 48266-1 to the injector tip.
    3. Fig 3: Using Special Tool EN 48266-1
    GM1829994Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    DO NOT lubricate the NEW teflon seal.

  3. Install a NEW teflon seal onto the EN 48266-1.
    4. Fig 4: View Of Teflon Seal
    GM1829993Courtesy of GENERAL MOTORS COMPANY
  4. Pull the NEW teflon seal by hand over the EN 48266-1 and into the groove in the injector.
  5. Remove the EN 48266-1 from the injector tip.
    6. Fig 5: Injector And Seal Installer & Sizer
    GM1829997Courtesy of GENERAL MOTORS COMPANY
  6. From the EN-48266 , install the EN 48266-2 to the injector tip.
    7. Fig 6: Resizing Teflon Seal
    GM1829998Courtesy of GENERAL MOTORS COMPANY
  7. Using the EN 48266-2, resize the teflon seal. Install the EN 48266-2, until it bottoms out against the injector body, and rotate the EN 48266-2 while applying only moderate force 180 degrees in one direction and then 180 degrees back in the other direction.
  8. Remove the EN 48266-2.
    9. Fig 7: Identifying Direct Fuel Injector & Harness Assembly
    GM2004498Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Note the correct routing of the electrical wiring. Failure to reinstall the wiring properly could result in damage to the wiring.

  9. Install the direct fuel injectors and harness (1) as an assembly and connect the electrical connector (2).
    10. NOTE:

    The fuel injectors have an alignment feature and must be reinstalled as noted during removal.

  10. Install 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 .
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