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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 976 (Engine Controls - 6.6L (Lb7) (Introduction)) >> Repair Instructions >> Fuel Injector Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: Refer to Engine Controls Component Views  for fuel injector locations. Failure to identify the correct cylinder will result in misdiagnosis.
  1. Remove the lower valve cover. Refer to Valve Rocker Arm Cover Replacement - Lower Left or Valve Rocker Arm Cover Replacement - Lower Right in Engine Mechanical - 6.6L.
    IMPORTANT: When the fuel injector pressure lines are removed, debris may fall into the fuel injector inlet fitting. Remove any debris from the inlet fitting of the fuel injector.
    2. IMPORTANT: Confirm which side of the banjo washers have the largest outer diameter.
  2. Remove the fuel injector return line from fuel injectors.
    3. Fig 1: View Of Fuel Injector Return Pipe
    GM660477Courtesy of GENERAL MOTORS CORP.
  3. Remove the bolt from the fuel injector bracket.
  4. Install J 44639  (2) onto the injector retainer bracket.
  5. Install a wrench onto J 44639  (2) and pry away from the fuel injector (1).
    6. Fig 2: Fuel Injector & J 44639
    GM761598Courtesy of GENERAL MOTORS CORP.
  6. Remove the fuel injector(s).
  7. Remove the copper compression washer from the injector hole if the washer was not removed with the injector.
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