Installation Procedure
CAUTION:
- Use care when servicing the fuel system components, especially the fuel injector electrical connectors, the fuel injector tips, and the injector O-rings. Plug the inlet and the outlet ports of the fuel rail in order to prevent contamination.
- Do not use compressed air to clean the fuel rail assembly as this may damage the fuel rail components.
- Do not immerse the fuel rail assembly in a solvent bath in order to prevent damage to the fuel rail assembly.
- If the fuel injectors were removed from the fuel rail. Refer to Fuel Injector Replacement .
- Lubricate the fuel injector O-rings using GM P/N 12345616, (Canadian P/N 993182).
- Install the fuel injector nozzles into the lower intake manifold injector bores.
- Press on the fuel rail (1) using the palms of both hands until the fuel injectors are fully seated.
- Install the fuel rail attaching bolts (2).
Tighten: Tighten the bolt to 10 N.m (89 lb in).
- Install the injector electrical harness to the fuel rail.
- Apply lubricant to the fuel injector electrical connectors. GM P/N 12377900, (Canadian P/N 10953529).
- Connect the fuel injector electrical connectors.
- Connect the coolant temperature sensor and camshaft position sensor electrical connectors
- Connect the main fuel injector electrical harness connector.
- Connect the fuel feed pipe (1) at the fuel rail (4). Refer to Metal Collar Quick Connect Fitting Service .
- Install the upper intake manifold. Refer to Upper Intake Manifold Replacement .
- Connect the negative battery cable.
- Inspect for fuel leaks.
- Turn ON the ignition for 2 seconds.
- Turn OFF the ignition for 10 seconds.
- Turn ON the ignition.
- Inspect for fuel leaks.
CAUTION:
Refer to Fastener Caution
.