What is this "something" that you connected? Knowing what it was could help in identifying if it could have somehow blew the PCM (doubtful; but need to know what this device was).

 

It was this. I thought about contacting them over this, but I threw it out when this all happened.

 

If the IAT sensor is part of the MAF, sounds like the old resistor mod to me, which pretty much lightens your wallet $35. Don't see any way it would let the smoke out of the PCM though.


As far as what could be wrong, maybe you broke global warming? Sounds pretty cold for the middle of summer.

 

Blown fuse #32? How much have you driven the truck since codes say MAF not working? If it was #32 then you would get other codes too, but may have to drive a little ways before they show up. Just an idea.

(That fuse handles MAF, oxygen sensors, VCT, CMCV, A/C clutch relay and your vapor purge system so, like I said, you would get other codes, but may have to drive 1-10 miles first before they show up.)