Installation Procedure
- Ensure that the fuel rail crossover pipe, right fuel rails fittings and left fuel rail fittings are clean and dry prior to assembly.
- Lubricate the pipes with silicon free engine oil GM P/N 12345610 (Canadian P/N 993193) or equivalent.
- Position the fuel rail crossover pipe (1) to the right fuel rails fitting (2) and left fuel rail fitting (3).
- Tighten the fuel rail crossover pipe fittings.
Tighten
28 N.m (21 lb ft)
- Inspect for leaks using the following procedure:
- Turn ON the ignition, with the engine OFF for 2 seconds.
- Turn OFF the ignition, for 10 seconds.
- Turn ON the ignition, with the engine OFF.
- Inspect for fuel leaks.
- Install the low side fuel pressure service port cap.
- Install the fuel tank cap.
- Install the high pressure pump shield. Refer to Fuel Pipe Shield Replacement .
- Install the fuel injection sight shield. Refer to Fuel Injector Sight Shield Replacement .
CAUTION:
Refer to Component Fastener Tightening Caution .
NOTE:
If a fuel leak occurs at the right fuel rail fitting (2) or left fuel rail fitting (3), that component will need to be replaced.