Have a new 2021 GMC AT4 tow vehicle, and added the optional TPMS for my 2008 Z20 Ranger Trailer dual axle. They always work great until I get down the road about 5 miles or more, and then I get a fault and they no longer show me the pressure and temperature. On the way home from the lake, same thing. And this continues each trip. When they fault they simply say service the trailer TPMS...
Any ideas why, and what I can do?