Every time a wheel is moved, a relearn has been conducted, both at the Chevrolet dealer and tire shops. Different sensors have been used and I sure have been paying for new ones. I have watched technicians change the sensor. The car has no modifications, apart from a small dash camera, which even when unplugged and sitting in the console turned off, isn't the cause of interference. The temperature has gone up and guess what, the sensors are reading again. When driving to Florida from Toronto, the system always has trouble with cold temperatures. It will operate correctly for a few hours, then suddenly act up and tell me that the RR is low on air. It does display a number, not the dashes. Once in Florida, the problem goes away. A month and 1/2 later on the trip home, as soon as it hits cold weather, it begins it's little dance. I keep a tire gauge in the car, and the tires do not loose air. In fact, due to a flat tire, the rear tires are new Goodyears with yes, new sensors again.