GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2008 🢒 TopKick C-Series (Conventional) C4/C5 🢒 Engine 🢒 Engine Controls and Fuel - 6.6L 🢒 Fuel Injection Fuel Rail Fuel Pressure Sensor Replacement

Removal Procedure

    Object Number: 1867091 Size: SH
  1. Remove the exhaust gas recirculation (EGR) valve cooler. Refer to Exhaust Gas Recirculation Valve Cooler Replacement .
  2. Remove the EGR cooler bracket bolts (1) and bracket (2) (with heat protector).

    3. Object Number: 1867093 Size: SH
  3. Disconnect the fuel rail fuel pressure sensor wiring harness electrical connector (2) from the sensor.
  4. Prior to removal, clean the fuel pressure sensor and surrounding area thoroughly with solvent, such as GM P/N 12377981 (Canadian P/N 10953463) or equivalent.
  5. Using compressed air, thoroughly blow dry the sensor and surrounding area.
  6. Remove the fuel rail fuel pressure sensor (1).

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1867093 Size: SH
  1. Install the fuel rail fuel pressure sensor (1).

    2. Tighten
    Tighten the sensor to 70 N·m (52 lb ft).

  2. Connect the fuel rail fuel pressure sensor wiring harness electrical connector (2) to the sensor.

    3. Object Number: 1867091 Size: SH
  3. Position the EGR cooler bracket (2) and install the bolts (1).

    4. Tighten
    Tighten the bolts to 50 N·m (37 lb ft).

  4. Install the EGR valve cooler. Refer to Exhaust Gas Recirculation Valve Cooler Replacement .
  5. Prime the fuel system. Refer to Fuel System Priming .
  6. Start the engine. If the engine stalls, repeat the above step.
  7. Once the engine starts, inspect for fuel leaks.