Anyone know if you have to buy the $150/pair GM Trailer Sensors (part # 84338125) or could you use another aftermarket sensor (that would be much cheaper). I need at least 4 for one trailer and another 4 for another trailer. My 2020 has the U1D option - Advanced Trailering Package where I can view the trailer’s tire pressure (and temp evidently).
Is it possible to get an aftermarket that will connect to the ATP?