GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2000 🢒 Sonoma Pickup - 2WD 🢒 Engine 🢒 Engine Controls - 2.2L 🢒 Fuel Injector Replacement

Removal Procedure

    Object Number: 12687 Size: SH
  1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief .

    2. Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  2. Disconnect the negative battery cable.
  3. Remove the fuel rail. Refer to Fuel Injection Fuel Rail Assembly Replacement .
  4. Remove the fuel injector retaining clip (2).
  5. Remove the fuel injector (3).

Installation Procedure

    Object Number: 12687 Size: SH

    Important:  Each fuel injector is calibrated for a specific flow rate. When replacing fuel injectors, be sure to order the correct fuel injector for the application being serviced.

  1. Lubricate new fuel injector O-ring seals (1)(4) and (5) with clean engine oil, and install the seals on the fuel injector assembly (3).

    2. Important: When installing the fuel injector, care should be taken not to tear or misalign the fuel injector O-rings.

  2. Install the fuel injector upper O-ring (1).
  3. Install the fuel injector lower back-up O-ring (4).
  4. Install the fuel injector lower O-ring (5)
  5. Install the fuel injector (3) to the fuel rail.
  6. Install the fuel injector retaining clip (2).
  7. Install the fuel rail. Refer to Fuel Injection Fuel Rail Assembly Replacement .

    8. Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  8. Connect the negative battery cable.
  9. Inspect for fuel leaks through the following steps:
    10. 9.1. Turn ON the ignition, with the engine OFF for 2 seconds.
    9.2. Turn OFF the ignition for 10 seconds.
    9.3. Turn ON the ignition, with the engine OFF.
    9.4. Inspect for fuel leaks.