Hi. I am a senior technician with over 25 years of experience. You have to replace the fuse box that contains the built-in fuel pump relay. The relay is mentioned as a non-serviceable part in the owners manual. To replace this relay, you have to replace the fuse-box. There are 12 quick connect plugs and a 10 mm socket to remove the wire going through the firewall. Yes, this wire is removable after you pop the cover off of the connection. A 1/2 inch socket will unbolt the fuse-box from the inside wall at the front seat passengers right kick panel. Two sockets are all the tools that you need. There are two wires going to the fuel pump near the left rear tire. Make sure that the fuel pump is getting power with a test light. This can be checked at the module behind left rear tire, on top of the frame. You can see it at the 2:00 position at the rear tire through the fender-well. The plug is on the front side of the module. You will have to lay under the truck to access this wire. A shield mounts the module to the frame. Two small screws hold the module on the shield and two more hold the shield on the frame. Coming out of the fuse-box is a dark green wire with a yellow stripe. This wire sends power out of the fuse-box to the inertia switch to the fuel pump. If you have power at #12 fuse but none at the green/yellow wire, the relay is bad. This wire is on the top of the fuse box, towards the firewall and bottom left wire in the plug. Again, to replace this relay on this vehicle, you must change the fuse-box. Hope this helps.