EL-50448 TPMS relearn tool works on most GM Vehicles (GMC / Chevy / Buick / Cadillac / Opel from 2006-2021, Cars, SUV, Pickup) equipped with 315 or 433 MHz Tire Pressure Monitor system (TPMS) sensor. It is an essential tool of replacement tire pressure sensor, tire pressure alarm remove or exchange tires. Applicable Models: Factory Tested Models: 2006-2020 For almost all GM Series vehicles: Buick, Cadillac, Chevy, GMC,Opel 2010: Acadia, Enclave. OUTLOOK, Traverse (VIN R/V) ,Allure, LaCrosse (VIN G),Antara. Captiva, Terrain, Winstorm, Avalanche. Escalade, Suburban, etc. 2011: Astra,Avalanche. Escalade, Suburban, Tahoe, Yukon (VIN C/K),Aveo, Barina (VIN S/T),Buick Excelle,Buick Regal (China),Camaro (VIN F),Canyon, etc. 2012: Camaro (VIN F),Canyon, Colorado (VIN S/T),Caprice PPV,Captiva Sport,Chevrolet Cobalt (2809),Colorado (Other IO), S10 (South America),Corvette.etc. 2013: Barina (5376837),Camaro (VIN F) (3106), Caprice PPV (3105),Captiva Sport (3101),Cobalt (3107),Colorado, Colorado 7, S10, Trailblazer (5392270),Combo-D,Corvette (VIN Y) (3104).etc. Customer test available models: 2006-2013: Corvette,Nissan Frontier,Cadillac Escalade,GMC Yukon Denali,NBS. etc 2014-2015: Buick Lacrosse,Chevy Volt,Chevy SS.Chevy Cruze,Chevy Equinox,Chevy Silverado. etc 2016-2018: Acadia,Buick,Buick cascada,Chevy lahoe,Chevy Cruze,Chevy equniox.etc Not applicable: 2016-2018 Chevy Colorado How to enter to car TPMS learning mode? 1. Turn on the ignition, make the gear in P position. 2. Use cruise function, choose TPMS leaning mode in the dashboard settings. 3. The car horn will beep twice and the TPMS indicator flashes, then the learning mode has been successfully entered. How to use this EL-50448 TPMS relearn tool ? 1. Put a 9v battery into the tool, and set the car into learning mode, then the car horn will sound twice. 2. Start from the left front tire, make the EL- 50448 antenna up against the tire sidewall around the valve core position. Press the start switch, the tool starts to read tire pressure sensor information. When the horn beeps(finished), the turn signal will light and go to the next tire position. 3. Please follow this order to test all tires: Left front, Right front, Right rear, Left rear. After all sensors have been reseted, the car horn will beep again, the tire pressure relearn is finished. 9V Battery Required Please make sure the 9V battery is with enough power, with this tool, you can easily learn TPMS yourself for your GM vehicle, instead of going to the dealer. Easy and Fast This TPMS relearn tool uses a sensitive sensor chip, it runs faster, you just need to press a button and wait for response, quick and easy to use. Applicable Models Almost all GM production vehicles equipped with 315 or 433 MHz Tire Pressure Monitor system sensor. (Chevy / Buick / Opel / Cadillac / GMC) from 2006-2020. Align in the Right Position When using this tool, please place the tool antenna on the tire near the valve core position. Do not place it on the valve core or other incorrect positions. When do you need this TPMS Relearn Tool？ 1. Do tire rotation but don't have a quick and easy way to let ECU relearn new tire information. 2.After New TPMS sensors installed,let air out or add air into the tire but couldn't make the system recognize new sensors. 3.When the tire pressure indicator lights up, it indicates that the tire pressure needs to be checked and the tire pressure needs to be reset to turn off the TPMS indicator. 4.Low tire pressure or leakage /replacement or installation of tire pressure monitoring equipment / tire replacement, sensor damage, etc. After those problems solved, TPMS needs to be reset.