Call the parts department with your VIN to ensure you have the correct frequency. If you have steel wheels, you may also need a different valve stem. my truck. I took them to two different tire shops and they couldn't assemble them. They took them back to where they mounted the tires and they actually got them to mate. I had a small bug with one of the devices, but the problem seems to have gone away after swapping out the pair. Now I can connect them myself, for some reason I'm not sure what…