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 NEW 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 the fittings first pass to 16 N.m (12 lb ft).
- Tighten the fittings final pass to 32 N.m (24 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 intake manifold. Refer to Intake Manifold Replacement .
- 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 (LLT) .
CAUTION:
Refer to Fastener Caution .
NOTE:
If a fuel leak accrues at the right fuel rail fitting (2) or left fuel rail fitting (3), that component will need to be replaced.