Yeah! I did get the bank 1, sensor out. I played out the info I picked-up on about patience. I sprayed it. Then I used some tapping vibration for a while. I then would spray it, and leave it overnight. When I tried to remove it today, it made a loud pop noise. It unscrewed right on out. I never used the torch at all. I drove it about 15 miles or 20 & the check engine light came on again. I used the Can on it, and the bank 2 is defective. I left the under pan off, in lieu of, this. I knew I would probably be looking at replacing both the inbound 02 sensors. I am happy to be able to solve the problem this way, because I am saving about 2400 dollars. That is what I was quoted from dealer. There was actually a recall on these trucks. Toyota was to stand by the sensors for 90K miles. Mine went out just a while back, but I only have 39K on my 2002 truck. I talked to the dealer on getting fixed, but they said toyota had a date on the fix, as well. Anway I appreciate your advise and help on the hang-up removing them. I think the PB Blaster is top notch on penetrating metal, and the can is cool. You don't need a nozzle on it. It will spray an arrow of a jet stream!!