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

    Object Number: 2156729 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: 2156724 Size: SH
  4. Install the wiring harnesses (2) and (3) onto the fuel rail (1).

    5. Object Number: 2173554 Size: SH
  5. Install the fuel rail assembly (3). Install the right side first, then install the left side with flex hose until all 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 studs and bolt. Refer to Adhesives, Fluids, Lubricants, and Sealers.

    7. Caution: Refer to Fastener Caution in the Preface section.

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