LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Buick >> 2009 >> Allure CX >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Control System & Fuel System - 5.3L - Introduction) >> Repair Instructions >> Fuel Injector Replacement >> Installation Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
IMPORTANT: Do not use the fuel injector O-ring seals again. Install NEW fuel injector O-ring seals during assembly.
    Fig 1: View Of Fuel Rail With Injectors
    GM1411907Courtesy of GENERAL MOTORS CORP.
  1. Lubricate the NEW O-ring seals with clean engine oil.
  2. Install the NEW fuel injector O-ring seals (532, 534) onto the injector, as required.
  3. Install the fuel injector (533), as required
  4. Install the fuel injector retaining clip (521), as required.
  5. Install the fuel rail. Refer to Fuel Injection Fuel Rail Assembly Replacement .