Do the 24Vs have injector rattle? And under what circumstances does it occur? I'm getting a really loud pinging and panging, like a metal on metal sound, in low rpms when on the throttle. It happens from 3rd to the 3rd lock-up and 3rd to 4th. Right after the shift, the rpms drop to 1300 or 1400 and it starts pinging, but as soon as I get past 1600 or so rpm I don't hear it anymore. My fear is pistons hitting the valves, and NO, I haven't done valve lash yet. Any ideas?

I had no idea of the sensors that are on this truck esp a battery one. What are the new trucks like?

Those are for the rich!   But they are riddled with electronics, which I don't prefer. On my brother's 05 you can't even unplug the intake air temp sensor without having to shoot dielectric grease in it and fiddle with it for 3 days trying the get the check engine light to go out!