Before starting, let the pressure in the fuel system drop and make sure you work in a room without anything that can catch fire. Remove the negative battery cable and remove the intake manifold plenum, so you can cover the intake manifold to keep unwanted materials from going into the engine. Press down on the red lever and then slide the tab at the connector toward the bottom to disconnect it from both the fuel rail and the electrical injectors at the rear of the vehicle. If the area for each injector is labeled in the wiring harness, remember this before you take it off the engine; otherwise, record the injector's place in the harness manually. Release the bolts holding the mount of the fuel rail in place at both sides and gently pull the fuel rail off the head. Unscrew the clips securing the fuel injectors and pull out the injectors from the rail. When installing, give the fuel injector O-rings small amounts of clean engine oil, add the retaining clips and place the injectors in the fuel injector rail until the clips are correctly positioned. Set the fuel rail above the cylinder heads and move it into place, fasten the mounting bolts to 11 N.m (100 in. lbs.). To begin, form the fuel tube securely onto the fitting at the fuel rail and the electrical connections between the injectors. Attach the intake manifold plenum, link the negative battery cable again and with the scan tool, turn on the fuel system pressure and watch for any leaks.