Over the weekend, I removed my stock 20" wheels on my Sierra and installed the stock 20" AT4 wheels/tires. I now have a warning light every time I get in my truck and sensors aren't working. I believe the AT4 wheels I installed has the sensors still.. Any advice on how to fix this? I called my tire shop and they said I would have to bring in my old wheels so they can take the sensors off of them and install them on my new wheels. Is this the only way? Any help would be great.