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Home >> Hummer >> 2008 >> H3 Base, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 315 (Engine Control System & Fuel System - 5.3L - Introduction, Service & Repair) >> Repair Instructions >> Fuel Injector Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2009 GMC Canyon and 2009 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Locating Fuel Injector ID Number
GM351196Courtesy of GENERAL MOTORS CORP.
NOTE: When ordering new fuel injectors, you must order the correct injector for the application being serviced.

The fuel injector (1) is stamped with a identification part number (2). A 4-digit build date code (3) indicates the month (4), day (5), year (6), and the shift (7) that built the injector.

    Fig 2: View Of Fuel Injector, Clip & O-Rings
    GM351185Courtesy of GENERAL MOTORS CORP.
  1. Lubricate the NEW injector O-ring seals (2 and 4) with clean engine oil.
  2. Install the NEW injector O-ring seals (2 and 4) onto the injector (3).
  3. Install a NEW retainer clip (1) on the injector (3).
  4. Fig 3: Identifying Fuel Rail, Injectors & Components
    GM1485989Courtesy of GENERAL MOTORS CORP.
  5. Push the fuel injector into the fuel rail injector socket with the electrical connector facing outward. The retainer clip locks on to a flange on the fuel rail injector socket.
  6. Install the fuel rail. Refer to Fuel Injection Fuel Rail Assembly Replacement .