Sierra Denali RWD V8-6.2L (2009)
Fuel Rail: Service and Repair
Fuel Injection Fuel Rail Assembly Replacement
Removal Procedure
Note
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. Refer to Air Cleaner Resonator Outlet Duct Replacement (See: Air Cleaner Housing/Air Cleaner Fresh Air
Duct/Hose/Service and Repair) .
2. Relieve the fuel system pressure. Refer to Fuel Pressure Relief (With CH-48027) (See: Fuel Filter/Fuel Pressure Release/Service and Repair/Fuel
Pressure Relief (With CH-48027))Fuel Pressure Relief (Without CH-48027) (See: Fuel Filter/Fuel Pressure Release/Service and Repair/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.
