GL-50448 TPMS Relearn Reset Activation Tool fits for all GM series Vehicles (Chevy / Buick / GMC / Opel /Cadillac etc.,) which are equipped with 315/433 MHz Tire Pressure Monitor system (TPMS) sensor. It is an improved product of EL 50448 with a circular antenna, which can offer a Faster & Stronger Signal than other TPMS Relearn Tool. After you do tire rotations or change a new tire, it can easily reset tire sensors, activate the in dividual TPMS sensors by pressing one button. This great TPMS reset tool is durable and easy to use for "Sensor Re-Learn Procedure". GM Vehicles Modes: For 2006-2024 almost all GM Series vehicles: Buick, Cadillac, Chevy, GMC, Opel, etc., Factory Tested Models： 2010: Acadia, Enclave. OUTLOOK, Traverse (VIN R/V), Allure, LaCrosse (VIN G), Antara.Captiva, Terrain, Winstorm, Avalanche. Escalade, etc., 2011: Acadia, Enclave, Traverse (VIN R/V), Alpheon, Antara. Captiva, Astra, Avalanche. Escalade, Suburban, Tahoe, Yukon (VIN C/K), Aveo, Barina (VIN S/T), etc., 2012: Acadia, Enclave. Traverse (VIN R/V), Alpheon (2706), Ampera,Volt (VIN R) (Europe), Antara, Captiva, Astra-J (2857), Avalanche, Escalade, etc., 2013: Acadia, Enclave, Traverse (VIN R/V) (3206), Alpheon (3094), Ampera, Volt (VIN R) (Europe) (3211), Antara, Captiva (5376555),Insignia (3098), etc., Customer Tested Models： 2006-2013: Corvette, Nissan Frontier, Cadillac Escalade , GMC Acadia, GMC Yukon Denali, etc., 2014-2015: Acadia, Buick Enclave, Buick Encore, Buick Lacrosse, Cadillac ATS, Cadillac CTS , etc., 2016-2018: Acadia, Buick, Buick cascada, Cadillac XTS, Chevrolet Express 3500, Chevrolet SS Sedan, etc., When do you need the GL50448 GM tpms relearn tool replace new sensors After New TPMS sensors installed,let air out or add air into the tire but couldn't make the system recognize new sensors. Do tire rotation Do tire rotation or replace tires but don't have a quick and easy way to let ECU relearn new tire information. Inflate or other issues 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. TPMS Error light up When tire pressure indicator light ON, the maintenance performed, the tire pressure needs to be reset to turn off the TPMS light. How to enter the TPMS learning mode? 1. Put the key in and hit the brake（Make the gear in P position） 2. Use cruise to choose TPMS re-learn mode in the dashboard settings. 3. Horn will ring twice and the TPMS indicator flashes, then the learning mode has been successfully entered. (If equipped, the message center will display the front left (LF) tire). How to use the GL50448 TPMS Relearn Tool for GM? 1. Set the car in TPMS learning mode. (car horn beep sound twice) 2. Start from the Front-Left wheel. Point antenna on correct position. Press & release power button. Succeed in reading the tire pressure sensor information when the horn bleeps once, then move to the next tire. 3. Read the pressure sensor information follow the Reset Sequence: Left front→Right front→Right rear→Left rear wheel.( Successfully read the the tire pressure sensor information when the horn beeps one time.) 4. After all sensors reseted, Turn signals is lighted for 3 seconds and the horn bleeps twice when the learning is complete. Warm Tips: Please check the fitment vehicle models to confirm the compatibility before placing order. If you are unsure whether it can apply to your car, please message us first time, we will help you check it. Before tire pressure monitoring system works normally properly, the body control module will record ID information of each position in the tire pressure sensor. When using GL50448, please make sure antenna in correct position. Please make sure the 9v battery in good condition. It works for light truck, but not for heavy truck. Your satisfaction is our momentum. If you have any question about the product, please feel free to MESSAGE US. We would try our best to solve the problem for you!