KINGBOLEN EL-50448 is an useful Activation Tool for GM series Vehicles.It can quickly reset tire sensors after you do tire rotation or change a new tire ,very easy to use and convenient,saving you trips to your dealer.It is suitable for GM Vehicles(for Chevy / for Buick / for GMC / for Opel /for Cadillac etc) that equipped with 315/433 MHz tire pressure monitor system Sensors. [2006-2018]: For almost all GM Series vehicles: For Buick, For Cadillac, For Chevy, For GMC, For Opel [2010] : For Acadia, For Enclave. OUTLOOK, For Traverse (VIN R/V), For Allure, For LaCrosse (VIN G), For Antara. Captiva, For Terrain, For Winstorm, For Avalanche. Escalade, For Suburban, etc. [2011] : For Astra, For Avalanche. Escalade, For Suburban, For Tahoe, For Yukon (VIN C/K),For Aveo, For Barina (VIN S/T), For Buick Excelle, For Buick Regal (China),For Camaro (VIN F),For Canyon, etc [2012] : For Camaro (VIN F), For Canyon, For Colorado (VIN S/T), For Caprice PPV, For Captiva Sport, For Chevrolet Cobalt (2809), For Colorado (Other IO), For S10 (South America), For Corvette.etc [2013] : For Barina (5376837), For Camaro (VIN F) (3106), For Caprice PPV (3105), For Captiva Sport (3101), For Cobalt (3107),Colorado, For Colorado 7, For S10, For Trailblazer (5392270), For Combo-D, For Corvette (VIN Y) (3104).et When do U need relearn tool? New TPMS sensors installed, letting air out or adding air in to the tire couldn’t make the system recognize new sensors.Do tire rotation, didn’t have a quick and easy way to let ECU relearn new tire information.When tire pressure indicator light ON, after the maintenance performed, the tire pressure needs to be reset to turn off the TPMS light.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.Exchanging the winter tires or Summer How to set your car in TPMS relearn mode? Make the gear in P position.Use cruise to choose TPMS re-learn mode in the dashboard settings.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)Before tire pressure monitoring system works normally properly, the body control module will record ID information of each position in the tire pressure sensor. How to use EL-50448 relearn tool? Step 1—Set the car into TPMS re-learn mode. (Car will horn twice) Step 2—Start from left-front tire, hold unit next to Valve and Press White Button, the horn bleeps once. Step 3—Follow this order to reset TPMS one by one: front-right, rear-right, rear-left tires. *After all sensors reset, the car horns twice means TPMS re-learn finished. Place on an appropriate position Please note: Hold the tool against the sidewall of the tire, near the valve stem to read sensor information, it won’t work if on an inappropriate position. Circuit Optimal Design Sensitive sensor, Circuit Optimal Design makes the operation more fast and reliable.Activates the individual TPMS sensor with the press of one button.Need a 9V Battery(Not include). Professional tool for GM vehicles EL-50448 TPMS Reset Tool Works on most for GM vehicles(From 2006-2018) equipped with 315/433 MHz, very powerful and easy to use.NOT SUITABLE for heavy duty truck.