Starting the replacement process for the 2500 series Fuel Tank filler pipe requires removal of the rear Fuel Tank combined with the chassis wiring harness ground bolt. Disconnect the left rear lamp ground wire from the frame and also the fill pipe ground strap that attaches to the frame. Finally cut off the rear axle vent hose clip from the neck of the fill pipe. The Fuel Tank fill hose clamp should be loosened while separating the quick connect fitting of the fuel fill hose evaporative emission (EVAP) line from the Fuel Tank line. First disconnect the fuel fill hose from the front tank while also removing the clamp attached to the crossmember. Next extract the fuel fill hose together with pipe assembly. Sealing off all exposed ends of the Fuel Tank and fuel/evap lines will protect them from contamination. Serviceable sections of the complete fill pipe assembly need disassembly that includes removing the evaporative emission canister hose, canister hose clamp, fill pipe clamp and housing bolts, housing, restrictor, vent hose, and canister hose clip. Assemble the components starting with tightening the Fuel Tank fill hose clamp to 2.5 n.m (22 lb in), then followed by the fill pipe, canister hose clip, fill hose clamp at 2.5 n.m (22 lb in), vent hose, and fill pipe clamp at 2.5 n.m (22 lb in) and restrictor and housing with housing bolts tightened to 2.3 n.m (20 lb in) and finally canister hose clamp at 2.5 n.m (22 lb in). Start fuel installation by removing protective caps from both ends of the fuel/evap lines attached to the front Fuel Tank and physically attach the fuel fill hose/pipe assembly before connecting the hose to its designated tank opening. Fasten both ends of the fuel fill hose evap line quick connect fitting to its Fuel Tank line while tightening the Fuel Tank fill hose clamp to 2.5 n.m (22 lb in). Position the integral clamp onto the crossmember at the same time install the rear axle vent hose clip onto the fill pipe neck and place the fill pipe ground strap against the left rear lamp ground wire. The last step requires installation of the rear lamp ground wire and ground strap to the frame where the lamp ground wire anti-rotation tab must be inserted into the frame hole before inserting and tightening the chassis wiring harness ground bolt to 9 n.m (80 lb in).