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 a special tool: EL-50448. Also works on 2014 GM models. 2. Specified diagnostic tool: The tire pressure sensor on models from 2012 and later can be read only with certain diagnostic tools. 3. Compatible: EL50448 works on all General Motors (Buick, Cadillac, Chevrolet) products manufactured with a 315 or 433 MHz TPMS. It will not work if aftermarket sensors with the wrong frequency are installed. 4. Wide application: EL50448 fits most GM vehicles equipped with a 315 or 433 MHz Tire Pressure Monitoring (TPM) system. 5. Efficient operation: EL50448 TPMS reset tool allows easy reprogramming of all tires in 3 steps. The tire pressure monitor sensor activation tool is user-friendly and activates individual TPM sensors with the press of a 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 procedure can be completed using the EL-50448 special tool. 2. EL50448 is an essential tool for tire pressure sensor replacement, tire pressure alarm reset, or tire exchange. Works on most General Motors (Chevy, Buick, Opel) vehicles equipped with a 315 or 433 MHz Tire Pressure Monitor System (TPMS) sensor. Specifications: Size: 150 x 65 x 5 mm Power supply: 9V battery (battery not included) Package Included: 1 x EL-50448 Tire Pressure Resetter Notes: 1. Due to differences between monitors, the picture may not reflect the actual color of the item. The style is the same as shown in the images. 2. Please allow slight dimensional differences due to manual measurement.