ITEM NAME:2 In 1 Home Tire Pressure Monitor Sensor TPMS Reset Tool Car Repair For GM Features: Compatible Brand: Compatible with for GM series and for Ford series vehicles. Replacement Parts: Replacing tire pressure sensors, tire pressure alarms or tire replacements. Notice: When using, please make sure antenna in correct position and the 9V battery(Not Included) in good.After all sensors reset, the car horns twice, the TPMS re-learn finished. Horn will ring twice and the TPMS indicator flashes, then the learning mode has been successfully entered. Set the car in TPMS learning mode.