I am having a similar very frustrating issue. I have a 2021 ZR2. I did a 5 tire rotation and had Discount Tire add a TPMS sensor to the spare. They told me their tool will not reset it. Now the left rear tire shows no reading for pressure. The other three are fine and sense changes. So I put it in learn mode, let 10+ lbs of air out of the RF, pump it back up, but horn never beeps. I have driven at high speeds for many miles. So I buy the reset tool. Not the cheap $8 one. I buy the ATEQ VT15 for like $60. I put it truck in learn mode. I start at left front. It has a good sensor, but it will not respond to the reset tool. Tired all four tires. No response. Stuck. I used my Topdon full scan tool and it saw no problems with the TPMS system.
