ClayInTheCity

That is absolutely correct. That's why I prefer your answer. But I was simply supplying some info the individual apparently doesn't have.

Well, I'm not sure that will work, but it's worth a try. I'd sure be interested to know if it does.

Or you could just forget about it. It doesn't do anything, or affect anything concerning the engine, or other accessories. I have a small TFT monitor mounted up there that almost completely covers mine up. It's for my cameras, and will also (shortly) be for my Intel NUC that I will install in the bottom seat/console box.

AH64ID's method is the best, as far as I am concerned. I'm not sure about a 2006 (I thought I was in the gen 3 2007.5-2009 area) but there IS a relay for the lift pump in the TIPM, but your truck has two pumps, the lift pump, and the fuel pump. Fuel pump is driven by a gear on the engine, only the lift pump is powered by DC.

Not using an OBD2 adapter. What year model is it? What truck is it? If it's a 2007.5-2009 model, those used a TIPM istead of a body module to "hub" the communications on the can bus. But if you have a spare TIPM, or he has his, you could swap them out on your truck, unlock it from that VIN, then swap yours back in. See, without accessing the ECU through the TIPM, the smarty will not be able to communicate with it, most likely.