GUOXING For GM vehicles equipped with a 315 or 433 MHz tire pressure monitoring system (TPM), a \"Sensor Relearn Procedure\" must be performed after tire rotation, remote locking receiver module, or tire pressure sensor replacement. This relearning process can be performed using the special tool EL-50448. Also applies to 2014 GM models. Tire pressure sensors on 2012 and later models can only be read with certain designated diagnostic tools. Before the tire pressure monitoring system operates normally, the control unit will record the ID information of each position in the tire pressure sensor; after replacing the tire or wheel speed sensor, use the following method to read the tire pressure sensor. For more information, see the following: Step 1 - Enter the tilt mode and set the gear lever to \" When the relearning is complete, the turn signal will light for 3 seconds and the horn will honk twice. For some vehicles equipped with a tire pressure monitoring system (TPM), after replacing the tire's remote locking receiver module or replacing the tire pressure sensor, a \"sensor relearn procedure\" must be performed. This relearning process can be performed using the special tool 50448 Compatible vehicle list: Package does not include charger and battery. General Motors Coverage Guang: The deflation method has only been validated on a 2011 Chevrolet Volt using the El-50448 TPMS relearn tool and I can program 4 TPMS in less than a minute. El-50448 can be paired on a GM 2010-2013 TPMS for programming.