Review on 🔧 2021 Edition VXDAS TPMS Relearn Tool - GM Tire Sensor TPMS Reset Tool for Tire Pressure Monitor System Activation - OEC-T5 for GM Buick/Chevy/Cadillac Series Vehicles by Sam Pullen

I bought this to relearn TPMS valves when swapping tires on my 2009 Chevrolet HHR. The tool works and is easy to use. Didn't work on one of the rear wheels. Maybe I used an old battery. This requires a 9 volt battery, which is not included in the scope of delivery. I had to use an alternative method that I learned which is FREE and doesn't require the use of a retraining tool like this. Try it and see if it works for you. This worked for me. 1. Turn the ignition switch to the ON2 position. Scroll through DIC (Driver Information Center) to select tire pressure.3. Press and hold the lock/unlock button on the fob until you hear a beep and you will see the tire pressure is zero. (You can see dotted lines instead of numbers when he does this)4. Get out of the car, leave the ignition on and go to the steering wheel, where the parking lights are on. Probably first left front.5. Remove the valve cap and use the valve to let some air out of the tire. Only a small amount of air is required for the system to recognize which tire is being relearned. The horn will beep when learned and the system will turn on the next cornering light until all TPMS valves have been learned. 6. Adjust the air pressure in all four tires to the recommended pressure listed on the driver's door frame.