GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 Monte Carlo 🢒 Engine 🢒 Engine Controls - 3.4L 🢒 Fuel Injector Replacement

Removal Procedure

    Notice: Use care in removing the fuel injectors in order to prevent damage to the fuel injector electrical connector pins or the fuel injector nozzles. Do not immerse the fuel injector in any type of cleaner. The fuel injector is an electrical component and may be damaged by this cleaning method.

  1. Remove the fuel rail. Refer to Fuel Injection Fuel Rail Assembly Replacement .

    2. Object Number: 537311 Size: SH

    Important: If the fuel injectors are found to be leaking, the engine oil may be contaminated with fuel.

  2. Remove the fuel injector retaining clip (1).
  3. Remove the fuel injector (3) from the fuel rail.
  4. Remove the fuel injector upper O-ring (2).
  5. Remove the fuel injector lower O-ring (4).

Installation Procedure

    Object Number: 537311 Size: SH
  1. Install the fuel injector upper O-ring (2).
  2. Install the fuel injector lower O-ring (4).
  3. Install the fuel injector (3) to the fuel rail.
  4. Install the fuel injector retaining clip (1).
  5. Install the fuel rail. Refer to Fuel Injection Fuel Rail Assembly Replacement .
  6. Inspect for fuel leaks with the following procedure:
    7. 6.1. Turn ON the ignition for 2 seconds.
    6.2. Turn OFF the ignition for 10 seconds.
    6.3. Turn ON the ignition.
    6.4. Inspect for fuel leaks.