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Home › GMC › 2001 › Sierra 1500 HD, 4WD › Repair and Diagnosis › Engine Performance › System › Engine Controls - 4.8L, 5.3L, And 6.0L - Repair Instructions › Repair Instructions › Fuel Injector Replacement › Removal Procedure

Removal Procedure

  1. Remove the fuel rail assembly. Refer to Fuel Injection Fuel Rail Assembly Replacement .
    IMPORTANT:

    The engine oil may be contaminated with fuel if the fuel injectors are leaking.

    2. Fig 1: Exploded View Of Fuel Rails & Injector Components
    GM350543Courtesy of GENERAL MOTORS COMPANY
  2. Remove the injector retainer clip (19).
  3. Remove the injector from the fuel rail pad.
    4. Fig 2: View Of Fuel Injector, Clip & O-Rings
    GM351185Courtesy of GENERAL MOTORS COMPANY
  4. Discard the injector retainer clip (1).
  5. Remove the injector O-ring seals (2, 4) from both ends of the injector. Discard the O-ring seals.
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