GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Holden 🢒 2009 🢒 WM Sedan 🢒 Engine 🢒 Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L 🢒 Fuel Rail and Injectors Installation

Fuel Rail and Injectors Installation L98, LS2

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


    Object Number: 1954075 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 with clean engine oil.
  2. Install the O-ring seals to the fuel injectors.

    3. Object Number: 1954074 Size: SH
  3. Install the fuel rail (3) to the manifold. Push firmly on both sides of the rail until all injectors have entered their bores.
  4. Apply a 5 mm (0.2 in) band of threadlock to the threads of the fuel rail bolts (2). Refer to Adhesives, Fluids, Lubricants, and Sealers.

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

  5. Install the fuel rail bolts (2) and fuel rail ground strap (1).

    6. Tighten
    Tighten the bolts to 10 N·m (89 lb in).


    Object Number: 1954076 Size: SH

    Important: The fuel rail stop bracket (2) must be installed. The fuel rail stop bracket (2) serves as a protective shield in the event of a vehicle frontal collision.

  6. Install the fuel rail stop bracket (2).
  7. Install the fuel rail stop bracket to intake manifold retaining bolt (1).

    8. Tighten
    Tighten the bolts to 10 N·m (89 lb in).

Fuel Rail and Injectors Installation LS3

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


    Object Number: 1552482 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 and 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: 1876001 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 Loctite 242 ™, 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 and 512) and fuel rail ground strap (557).

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


    Object Number: 1876000 Size: SH
  7. Inspect the fuel rail ground strap (557) for proper installation.