Features: 1.For GM vehicles equipped with a 315 or 433 MHz Tire Pressure Monitoring (TPM) system, a ""Sensor Re-Learn Procedure"" must be performed after tire rotations, Remote Control Door Lock Receiver Module replacement or Tire Pressure Sensor replacement. This re-learn procedure can be performed by using 2.special tool: special tool for EL-50448. Also works on 2014 GM models. 3.specified diagnostic tool: The tire pressure sensor on models in & after 2012 can be read, only with some specified diagnostic tools. 4.compatible: EL50448 works on all General Motors (Buick, Cadillac, Chevrolet) products manufactured.It won't work if you've purchased aftermarket sensors that are the wrong frequency. 5.Widely Use:EL50448 fit for G.M most kind of vehicles, equipped with a 315 or 433 MHz Tire Pressure Monitoring (TPM) system. 6.Effect:EL-50448 TPMS reset tool can help you reprogram all tires much easier with 3 steps. Tire pressure monitor sensor activation tool is easy to use, activates the individual TPM sensor with the press of one button. Descriptions: 1.For vehicles equipped with a 315 or 433 MHz Tire Pressure Monitoring (TPM) system, a ""Sensor Re-Learn Procedure"" must be performed after tire rotations, Remote Control Door Lock Receiver Module replacement or Tire Pressure Sensor replacement. This re-learn procedure can be performed by using special tool EL-50448. 2.EL50448 is essential tool of replacement tire pressure sensor, tire pressure alarm remove or exchange tires.Works on most General Motors (Chevy/Buick/Opel) equipped with 315 or 433 MHz Tire Pressure Monitor system (TPMS) sensor. Specifications: Size:150*65*5mm Power supply: 9V battery (without battery) Package Included: 1 x El-50448 Tire Pressure Resetter Notes: 1.Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. 2.Please allow slight dimension difference due to different manual measurement.