Just went through this about two weeks ago...Cracked my skull once I popped it out, my head is still ringing from it, no lie.... What we did was a combination of the following...I had the Jeep up on the lift. Lots of spray lube, lots of wiggling and...sort of like a previous post mentioned, we locked on a vice grip and pried with a pry bar against the vice grips. One thing to note which I think is VERY important...When you pry, you change the angle of the sensor which in turn has you fighting yourself. With it not being straight, it wedges into the hole. So, every now and then, reach up and pull the sensor down to straighten it out again, give it some wiggle and some more spray, repeat repeat repeat. Also see if you can manage to change the pry point where you contact the vice grips, this will also help keep it more straight. This took me and another person about 2.5 hours. Getting the new one in sucks as well, we had to clean the hole, grease and do a bit of sanding on the sensor to get it in...I will also say this. I got an aftermarket sensor by accident, didn't know until after it was in. Car failed following day when it got to op temp. Had to wait 1/2 hr for it to cool, drive it 5 min then stalled again...So, make sure you have a mopar sensor.