K 1500 Suburban 4WD V8-4.8L VIN V (2003)
Fuel Rail: Service and Repair
Fuel Rail Outlet Pipe Replacement
Fuel Rail Outlet Pipe Replacement
IMPORTANT:The fuel rail for the 5.3L regular production option (RPO) L59 (VIN Z) engine is compatible with fuel that has a composition of up to
85 percent Ethanol (E85). Because of this, the fuel rail will be service as an entire assembly this includes both left and right rail
assemblies and fuel return pipe.
REMOVAL PROCEDURE
1. Relieve the fuel system pressure. Refer to the Fuel Pressure Relief Procedure.
See: Fuel Filter/Fuel Pressure Release
2. Disconnect the fuel feed pipe and return pipes (1) from the fuel rail.
3. Remove the retaining clip attaching screw (4).
4. Remove the crossover fuel pipe retainer clip (5).
5. Remove the fuel return pipe attaching screw (3) and the fuel return pipe retainer (2).
6. Remove the fuel return pipe (1).
7. Remove and discard the fuel return pipe O-ring (6).
