VXDAS GL-50448 TPMS Relearn Reset Activation Tool for G-M series Vehicles. It can quickly reset tire sensors after you do tire rotation or change a new tire, suitable for G-M Vehicles(Chevy / Buick / G-MC / Opel /Cadillac etc) that equipped with 315/433 MHz tire pressure monitor system Sensors. How to use EL-50448 TPMS Relearn Tool Tire air Pressure reset ZR2 Specific but universal for GM. John Drives Anything. 185K views 5 years ago. Super EL50448 is new product, which is able to work with both G/M series and F/ord series TPMS relearn tool, Super EL50448 is essential tool of replacement tire pressure sensor, tire pressure alarm remove or exchange tires for G/M / Ch/evy / Bu*ick / G*MC / Op*el / F*ord / Lin*coln / Mer*cury etc. 1. Need 1x pcs 9v battery to work 2. Set the car in TPMS learning mode. (car horns) 3. Starting from the left front tire,the antenna of the dedicated toolfor tire pressure monitoring is facing upwards against the tire sidewal near the rim of the valve stem to start the antenna.Press and release the button and wait for the speaker to emit a chirp. EL-50448 OEC-T5 is tire pressure relearn/reset tool for all General Motors vehicle. Such as Cadillac, GMC, Buick, Opel, Chevrolet and more.Included Cars, SUV VXDAS EL-50448 TPMS Tool for GM (Editor's Pick) JDIAG 2IN1 EL50448 TPMS Relearn Tool for GM and Ford; Autel MaxiTPMS TS501 TPMS Programming Tool; VXSCAN El-50448 Auto TPMS Reset Tool; ATEQ VT31 TPMS Reset Activation Programmer Tool; Autel TS408 Handheld TPMS Service Tool; Autel TS401 TPMS Programming Tool; Autel MaxiTPMS TS601 TPMS 5ynSz.