OEM 2006 GMC Savana 3500 Fuel Rail

2006 GMC Savana 3500 Fuel Rail Parts Questions & Experts Answers

• Q: How to replace the fuel rail assembly on 2006 GMC Savana 3500?

  A: The process of Fuel Rail assembly replacement should start with engine cover and air cleaner resonator outlet duct removal. Type gm x-30a engine cleaner onto the Fuel Rail assembly while abiding by the product directions and refrain from submerging components in cleaning liquids. A serviceable eight-digit identification mark exists on the Fuel Rail assembly which can be used for part replacement or servicing operations. Disconnect both accelerator control cable together with the cruise control cable from their attachment points at the bracket and Throttle Body before removing the upper engine wire harness retainer nut. To access the evap purge valve you should disconnect its harness and shift the upper engine wire harness to an adjacent position. Encase the electrical connectors for the injectors then mark them to their respective places to maintain proper firing sequence during reinstallation. Use care when removing multec 2 fuel injector connectors by not employing pliers since it will cause damage. First raise the connector position assurance on the injector connector before pushing the tab on the injector connector to disconnect the fuel injector connector. Proceed with this method on every injector connector before you remove the fuel feed and return pipes from the Fuel Rail while ensuring no damage happens to either the injector electrical connector terminals or spray tips. Add caps to the fittings as well as plugs to hole openings to stop contamination from entering. First detach the fuel pressure regulator vacuum line followed by loosening the right Fuel Rail retainer screw then removing Fuel Rail bolts to separate the part. Extract and discard o-ring seals at the bottom of every injector from the system. You should apply clean engine oil to the new fuel injector lower o-ring seals before fitting them onto the injectors. First remove the retaining clip attaching screw along with the crossover pipe retainer from the right-hand Fuel Rail before you take out the crossover pipe rail and o-ring. Prepare an o-ring for the crossover pipe by applying engine oil and position it into place. First manually start the retaining clip attaching screw before installing the crossover pipe into the right Fuel Rail to prevent thread stripping. After loosely attaching the retaining clip and its screw to the crossover pipe retain you must add the Fuel Rail. You should use a 5 mm length of gm p/n 12345382 thread lock on the Fuel Rail bolt threads before installing the bolts accordingly then tightening them to 10 n.m. Next, apply 3.8 n.m torque to the screw. After that, fit the fuel pressure regulator vacuum line and fuel feed and return pipes to the Fuel Rail along with connecting the fuel injector electrical connectors. Make sure to position each connector correctly on the proper injector while turning the injectors as necessary to protect the wire harness from stretching. Connect the evap purge solenoid connector and install the retainer nut before tightening it to 5.5 n.m. Afterward, reattach the accelerator control cable and cruise control cable and install the air cleaner resonator outlet duct followed by the engine cover. Use this method for inspecting leaks by switching on the ignition for two seconds then waiting ten seconds for the engine to turn off before starting it again to verify fuel leakages.