GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2005 🢒 GTO 🢒 Engine 🢒 Engine Mechanical - 6.0L 🢒 Fuel Rail and Injectors Installation

    Caution: Refer to Fuel Rail Stop Bracket Installation Caution in the Preface section.


    Object Number: 1408857 Size: SH

    Important: DO NOT use the fuel injector O-ring seals again. Install NEW fuel injector O-ring seals during assembly.

  1. Lubricate the NEW fuel injector O-ring seals (532, 534) with clean engine oil.
  2. Install the O-ring seals to the fuel injectors.
  3. Install the fuel injectors (533) and retainers (521).

    4. Object Number: 1408856 Size: SH
  4. Install the fuel rail assembly (510) to the manifold. Push firmly on both sides of the rail until all injectors have entered their bores.
  5. Apply a 5 mm (0.2 in) band of threadlock GM P/N 12345382 (Canadian P/N 10953489), or equivalent, to the threads of the fuel rail bolts. Refer to Adhesives, Fluids, Lubricants, and Sealers .

    6. Notice: Refer to Fastener Notice in the Preface section.

  6. Install the fuel rail bolts (511, 512) and fuel rail ground strap (557).

    7. Tighten
    Tighten the fuel rail bolts to 10 N·m (89 lb in).


    Object Number: 1408855 Size: SH
  7. Inspect the fuel rail ground strap (557) for proper installation.