The first step to change the Fuel Rail assembly begins with relieving fuel system pressure then removing the wire harness bracket nut. The vehicle requires disconnecting three elements - evap purge solenoid electrical connector and generator electrical connector and manifold absolute pressure sensor and
Knock Sensor. Opt for the following steps to detach the electronic throttle control (ETC) electrical connector. Start by releasing the gray retainer and depressing the black clip before separating the connector. Next, remove the Knock Sensor harness connector from the
Intake Manifold. Exchange the connector position assurance retainer to remove
Fuel Injectors and main coils from the right side of the motor before proceeding with the left side main coils and fuel injectors by unplugging the harness clips from the Fuel Rail in sequence. Place the engine wire harness to the side after marking which electrical connector belongs to each Fuel Injector for reassembly. First push the tab located on the connector then pull the cpa retainer one click up before completely disconnecting all Fuel Injector electrical connectors. Decouple the positive crankcase ventilation (PCV) hose followed by disconnecting the fuel feed pipe from the Fuel Rail as the first step when removing Fuel Rail bolts. Take out the Fuel Rail assembly while protecting both the injector electrical connector terminals and spray tips and ensure you stop up all exposed fittings to stop contamination. First clean the Fuel Rail by spraying an engine cleaner and afterward remove the lower o-ring seals from each injector. Deliver engine oil to new Fuel Injector lower o-ring seals prior to their installation on each injector component. After applying threadlock gm p/n 12345382 (Canadian P/N 10953489) to 5 mm (0.2 in) of the Fuel Rail bolts' threads, tighten them to 10 n.m (89 lb in). The fuel feed pipe requires attachment to the Fuel Rail along with pcv hose installation before fitting the electrical connectors to the fuel injectors. Pay attention to proper assembly. Begin by placing the engine wire harness followed by joining all main coil and fuel injectors on the left side and then repeating the same process for the right side and finally installing cpa retainers and harness clips to the Fuel Rail . Follow the etc electrical connection process which includes engaging the gray retainer before joining the
MAP Sensor and Knock Sensor alongside their respective connectors to the Intake Manifold and resultant connections of the evap purge solenoid electrical connector and generator electrical connector . Complete the installation by fixing the wire harness bracket nut to 5 n.m (44 lb in), screw down the fuel fill cap and connect the negative
Battery Cable while evaluating for leaks through a test sequence of on-2 seconds-off-10 seconds-on.