TPMS Relearn Tool: Our EL-50448 is the best GM TPMS sensor activation tool to help you identify new sensors after tyre changes, TPMS sensor replacements, pressure alarms, etc. Wide coverage: Our TPMS re-learning tool is suitable for most GM models (from 2006-2021, cars, SUVs, pickups and light trucks, GMC / Chevy / Buick / Opel / Cadillac etc.). It is equipped with a 315 or 433 MHz tyre pressure monitoring sensor (TPMS), which allows the TPMS re-learning tool to have a wide model coverage. Easy to operate: The EL-50448 TPMS re-learning tool is easy and user friendly for first time users with its simple steps.The EL-50448 Orange TPMS OEC-T5 helps you to activate individual tyres more easily in just 3 steps and can be easily done in 1-2 minutes. Saving you valuable time to spend with your family. Save money: The EL 50448 TPMS re-learning tool will help you save unnecessary expenses. You don't have to go to an auto repair shop just to reset your sensors. Our EL-50448 TPMS re-learning tool will help you to easily activate all tyre sensors in a short time. How to operate: Before using the EL-50448 TPMS reset tool, make sure that the car is in TPMS learning mode and follow the service procedure. Place it in the correct position near the valve stem. Press the learn button while holding the TPMS reset tool against the tyre sidewall until the horn sounds once.