Fuel Pressure Sensor: Service and Repair

FUEL RAIL PRESSURE (FRP) SENSOR REPLACEMENT

REMOVAL PROCEDURE




1. Remove the air cleaner outlet duct.
2. Remove the exhaust gas recirculation (EGR) cooler tube.
3. Remove the EGR cooler heat protector bolt (1) and protector (2).
4. Disconnect the fuel rail pressure sensor electrical connector (4).
5. 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.
6. Using compressed air, thoroughly blow dry the sensor and surrounding area.
7. Remove the fuel pressure sensor (3).

INSTALLATION PROCEDURE




1. Install the fuel pressure sensor (3).

NOTE: Refer to Fastener Notice in Service Precautions.

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

2. Connect the fuel rail pressure sensor electrical connector (4).
3. Install the EGR cooler heat protector (2) and bolt (1).

Tighten the bolt to 25 N.m (18 lb ft).

4. Install the EGR cooler tube.
5. Install the air cleaner outlet duct.
6. Prime the fuel system. Refer to Fuel System Priming.
7. Start the engine. If the engine stalls, repeat the above step.
8. Once the engine starts, inspect for fuel leaks.