This is the post that keeps on giving! The information here has been really helpful, and in figuring out what I did wrong... I have an 09 Tahoe torn apart in the driveway, was replacing rear seals and bearings. I managed to tear the guts out of the reluctor/tone rings in the process. I have the new parts and new sensors just in case, I have the tool for setting the depth of the wheel bearings. What I cant get a hold of is the J-45860 Tone Ring Installer. Does anyone know where I can get a hold of one of these? They are out of stock every where I look. I've also talked with my mechanic and Napa and Autozone about rentals, no luck. Thought I would buy it as it should work on a couple other trucks here. Thanks for any thoughts on this.