【TPMS Relay Tool】For GM series vehicles equipped with a tire pressure monitoring system, the "sensor relearn procedure" must be performed after tire rotation, remote door lock receiver module replacement, or tire pressure sensor replacement. This relearn process can be completed with the special tool. 【Supported 2006-2020 Models】The EL50448 TPMS sensor is an important tool for replacing the tire pressure sensor, removing or replacing the tire pressure alarm. Applicable to most General Motors with TPMS sensors for Opel, GMC, Chevrolet, Buick, Cadillac. 【Easy to Use】It only takes three steps to reset the tire pressure. Press the button to reset the tire pressure. [Easy to Use] It only takes three steps to reset the tire pressure. Press the button to reset the tire pressure. 【Save Time and Money】The activation tool is simple and fast. Press the button within 1 to 2 minutes to activate a single TPM sensor. Save time and money. There is no need to go to a specialized store. 【Note】 Please