We had this same problem with our new 2023 GD. Salesperson told us we needed to purchases the sensors that screw on the stems so that's what I did. THIS WAS NOT CORRECT. The tire sensors are internal, no need for valve stem unit. After not being able to get them to pair I called Lippert. They said I shouldn't have bought them and were great about letting me return them, but anyway, it turned out the software on the brand new rig was not up to date. Our Lazy Days dealer was useless in helping us get the relay unit in the pass through replaced, and again, Lippert was great about helping us. If you're having a problem connecting I'd call Lippert as they may be able to trouble shoot it better than anyone else's anecdotes. I was able to give them the serial number which helped them diagnose. Also, you can't use an app and have to use the monitor included with the TPMS package. This has been the next problem as the cord got loose and it won't charge so guess I have to spend $200 for a new one and make sure it's charged before travel because trying to plug in the short little cord while driving I think led to it's demise. Not a great product.