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Home >> GMC >> 2004 >> Sierra 2500 HD, 2D Pickup, 8.1 G, RWD, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 8.1L (Introduction) >> Repair Instructions >> Fuel Injector Replacement >> Removal Procedure

Removal Procedure

NOTE: Use care in removing the fuel injectors in order to prevent damage to the fuel injector electrical connector pins or the fuel injector nozzles. Do not immerse the fuel injector in any type of cleaner. The fuel injector is an electrical component and may be damaged by this cleaning method.
    IMPORTANT: The engine oil may be contaminated with fuel if the fuel injectors are leaking.
    Fig 1: View Of Fuel Injector, Clip & O-Rings
    GM351185Courtesy of GENERAL MOTORS CORP.
  1. Remove the fuel rail. Refer to Fuel Rail Assembly Replacement .
  2. Remove and discard the fuel injector retaining clip (1).
  3. Remove the injector (5) from the fuel rail.
  4. Remove and discard the injector O-ring seals (2, 4) from both ends of the injector.
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