[mthandt]

There is only one screw on his 04. I would think because of only having one screw it might twist in but I don't really think it does. I don't recall when I took the IAC sensor off an 03 TB that I sold. I think it should just come out, might just be stuck from the o-ring.

 

[mthandt]

I wouldn't really "tug" it off because it is a delicate sensor and if you hit or twist the plunger on it it can go bad. You could give it a little moderate force but be very careful not to hit it when you are trying to pull it out.

 

[mthandt]

Maybe try to wiggle it back and forth and see if it will loosen. Again I am not to familiar with the 2003+ IAC sensor and how it mounts to the TB.

 

[mthandt]

I'm sure someone with the right year truck will chime in soon. Sorry I couldn't be of more help to you though. I definitely do not recall having any difficulties when I was removing the sensor from the 03 TB that I acquired.

I'm sure yours is just gummed up and stuck but I would be the same way if I was in your situation, afraid to break something.