For GM vehicles equipped with a 315 or 433 MHz Tire Pressure Monitoring (TPM) system, a Sensor Relearn Procedure must be performed after tire rotation, remote lock receiver module replacement, or tire pressure sensor replacement. This relearning process can be performed using the special tool EL-50448. Also applies to 2014 GM models. Tire pressure sensors on 2012 and later models can only be read using certain designated diagnostic tools. Before the tire pressure monitoring system works normally, the body control module will record the ID information of each tire pressure sensor position. After replacing the tire or wheel speed sensor, use the proper method to relearn the tire pressure sensor IDs. For the specific procedure, refer to the vehicle’s owner manual. Step 1 - Enter the relearn mode and place the shift lever in park. After the learning is completed, the turn signal light will illuminate for 3 seconds and the horn will beep twice. For some vehicles equipped with a tire pressure monitoring (TPM) system, after replacing the remote lock receiver module or tire pressure sensor, a sensor relearning procedure must be performed. This relearning procedure can be performed using the special tool EL-50448. Compatible Vehicles List: Charger and battery are not included in the package. For trucks and cars: Simple and effective solution. Much better than going to a dealer or tire shop to reset the pressure sensor. I use it on my truck and my wife's, and it only takes a few minutes to reset all four wheels. Properly showing low battery display: I have never had my TP sensor programmed using the bleed method on my 2007 Tahoe. Before I had this tool, I only remembered which tire was which when I rotated them, but no longer. Now I can reprogram them in seconds and the dashboard display correctly indicates which tire is low. This tool should come with the vehicle. Easy to use: The operation of this product is simple and clear. As mentioned, spending time just to rotate tires is not exciting, but considering how much a dealer would charge, it wouldn’t take many service visits to pay for the unit. As far as working, it does exactly what it says it does without issues. Put the vehicle in reset mode and press the button on the unit as instructed in the owner's manual. I can’t believe I need a special tool to rotate my tires. As far as I understand, for 2010 (2011) and older vehicles, you can use any large magnet to reset your tire pressure sensor. For 2011 (2012) and at least my 2013 Silverado, you need one of these tools. This works like a champ, the one I found referenced through the GM website. GM Coverage: The deflation method is only validated on a Volt 2011 using the EL-50448 TPMS relearn tool, and I can program 4 TPMS sensors in less than a minute. EL-50448 can program TPMS in GM 2010–2013 vehicles.