GM Service Manual Online
For 1990-2009 cars only

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


    Object Number: 1401978  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: 1401976  Size: SH
  5. Install the fuel rail assembly (510) to the manifold. Push firmly on both sides of the rail until all the injectors have entered their bores.
  6. 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 .
  7. Notice: Refer to Fastener Notice in the Preface section.

  8. Install the fuel rail bolts (511).
  9. Tighten
    Tighten the fuel rail bolts to 10 N·m (89 lb in).


    Object Number: 1401970  Size: SH
  10. Install the evaporative emission (EVAP) canister purge solenoid valve (730) and tubes (729, 735).

  11. Object Number: 260098  Size: SH
  12. Install the fuel rail stop bracket and bolt.
  13. Tighten
    Tighten the fuel rail stop bracket bolt to 50 N·m (37 lb ft).