brims

Take two 3/8" bolts and put them in the threaded holes and use them to back the drum off.

Magnet works for the older Corvettes, my TPMS tool came with a magnet for the older Corvettes. Using the magnet on your truck is probably just a placebo affect. Have no explaination for your friends truck. Wonderful design. Oh well, the OTC 3833 is a nice tool. My dealer was completely oblivious. On my 07, the guy got in the truck, turned it on, hit the button on the dash, the horn honked, he turned it off, and handed me the keys. I said something about how the manual says that's not right. I forget what happened then, I know I was pissed and left. The mechanics at that dealer are completely worthless.

Yeah, like pushing a reset button on the dash to relearn all positions at once. it wouldnt be able to identify the sensor locations in that case. tpms systems that dont tell you the pressures at each tire have a single reset button. honestly... its not that hard to do. ive reset mine numerous time for new tire/wheel combos and new rotations and ive never had it not work on the first try..... i really dont know how much easier they can make it...... I have never been able to get the air pressure method to work. My mom's Jeep doesn't need to be relearned, there are receivers at each wheel well that pick up the individual sensors. A lot better system than the stupid thing we have.