GM Service Manual Online
For 1990-2009 cars only

Fuel Rail and Injectors Installation 6.2L LS9


    Object Number: 2054132  Size: SH

    Note: 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 (2) with clean engine oil.
  2. Install the O-ring seals to the fuel injectors.
  3. Install the fuel injectors (3) and retainers (1).

  4. Object Number: 2054131  Size: SH
  5. Install the wiring harnesses (2) and (3) onto the fuel rail (1).

  6. Object Number: 2054130  Size: SH
  7. Install the fuel rail assembly (3). Install the left side first, then install the right side with flex hose until all injectors have entered their bores.
  8. 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 studs and bolt. Refer to Adhesives, Fluids, Lubricants, and Sealers.
  9. Caution: Refer to Fastener Caution in the Preface section.

  10. Install the fuel rail studs (1) and bolt (2) and tighten to 10 N·m (89 lb in).

  11. Object Number: 2054129  Size: SH
  12. Install the supercharger cover seal (3).
  13. Install the supercharger cover bolts (1) and the supercharger cover (2).

  14. Object Number: 2085707  Size: SH
  15. Install the cover bolts (1).
  16. 10.1. Tighten the bolts a first pass in sequence to 5 N·m (44 lb ft).
    10.2. Tighten the bolts a final pass in sequence to 10 N·m (89 lb ft).