EL-50448 Tire Pressure Monitor Sensor TPMS Activation Tool OEC-T5 For GM vehicles For GM vehicles equipped with a 315 or 433 MHz Tire Pressure Monitoring (TPM) system, a 'Sensor Re-Learn Procedure' must be performed after tire rotations, Remote Control Door Lock Receiver Module replacement or Tire Pressure Sensor replacement. This re-learn procedure can be performed by using special tool EL-50448.Also works on 2014 GM models EL-50448 instructions: EL50448 works on all General Motors (Buick, Cadillac, Chevrolet, GMC) products manufactured for the North American market. It won't work if you've purchased aftermarket sensors that are the wrong frequency. EL50448 fit for G.M most kind of vehicles, equipped with a 315 or 433 MHz Tire Pressure Monitoring (TPM) system. This re-learn procedure can be performed by using special tool EL-50448. How to use EL 50448 TPMS Activation Tool Step 1- Enter leaning mode Set the gearshift lever to 'P' Put the ignition switch to ?ON? Enter the interface of tire pressure display by DIC DIC shows 'Press Set / Ctrl to re-learn' Press ?Set / Ctrl? The turn signal is lighted for 3 seconds and the horn beep sound twice to enter the learning mode Step 2- Read tire pressure sensor information Start from the front-left wheel, Make the J-46079 or Diagnostic Tool EL-50448 antenna up against the valve core position close to the rim of the tire sidewall El-50448 tire pressure tool starts by the start switch Successful to read the tire pressure sensor information when the horn bleeps once Step 3- Same method to read other tire pressure information Follow the instuction above to read tire pussure of the front-right, rear-right, rear-left wheels. Turn signals is lighted for 3 seconds and the horn bleeps twice when the learning is complete. For certain vehicles equipped with a Tire Pressure Monitoring (TPM) system, a 'Sensor Re-Learn Procedure' must be performed after tire rotations, Remote Control Door Lock Receiver Module replacement or Tire Pressure Sensor replacement. This re-learn procedure can be performed by using special tool 50448 Please Kindly Note: The package does not include the charger and battery. Packing List: 1 x EL-50448 Tool