Sierra 1500 4WD V8-6.0L (2007)
Fuel Rail: Service and Repair
Fuel Injection Fuel Rail Assembly Replacement
Fuel Injection Fuel Rail Assembly Replacement
Removal Procedure
Important: An 8-digit identification number is located on the fuel rail. Refer to this identification number when servicing or when part
replacement is required.
1. Remove the air cleaner outlet duct.
2. Relieve the fuel system pressure. Refer to Fuel Pressure Relief (With CH 48027) Fuel Pressure Relief (Without CH 48027).
3. Remove the engine wiring harness bracket nut (1).
4. Disconnect the engine wiring harness electrical connector (2) from the evaporative emission (EVAP) purge solenoid.
5. Disconnect the engine wiring harness electrical connector (3) from the generator.
6. Disconnect the engine wiring harness electrical connector (4) from the manifold absolute pressure (MAP) sensor.
