[Brian 162]

Originally Posted by rockfan4

If you can train her to look at the light. Just after we replaced the tires on her car, about a year ago, I got in her car to drive it, and the light was on. "How long has this been on?" "I don't know." Left rear had about 20 lbs in it. Found a nail, pulled it, plugged the tire. Got in her car again a couple days ago, the light was on again. "How long has this been on?" "I don't know." One dead sensor.

Back to the problem at hand. She's home now, and I was able to sync up two of the 2010 truck's snow tires, and two of the tires on her car to the Silverado. I know the old silverado had 315Mhz sensors, so that would tell me the 2019 uses the 315Mhz sensors, and since I was able to sync up two of the tires on her car, it uses 315Mhz as well.


GM is pretty simple. Turn the key to on, but don't start the car. Go to the tire pressure screen on the dash. Hold down the checkmark button until the horn beeps, and the dash now says "learning mode". Get out, go to the left front tire. The left front turn signal will be lit. hold a magnet or the tire sensor tool by the tire until the horn honks. Then the Right front turn signal lights, do that tire. Then Right Rear, then Left Rear, then the horn honks twice, and the car has learned the 4 new sensors. Piece of cake.

You can also add or reduce tire pressure when doing the re-learn on GM vehicles. It takes around 10-15 seconds and the horn should honk for that sensor.
I used to do it that way when switching my summer to winter tires. I finally broke down and bought a TPMS re-set tool