After having discount tire relearn my sensors every time i rotated my tires, i got to know the service manager and he showed me how to relearn them myself. Go to tire pressure screen and hold down the center check button until it's ready to relearn. Start at front driver side and let some air out til horn blows. Move to front passenger side, then rear passenger side, then rear driver side which will beep horn twice if done right. Has worked for me twice on '14 Silverado LT