I had a 2010 CTS wagon with same issue from October 2022 to January
2024, no tire pressure on monthly report and no tire pressure on app. I
had a case number, numerous calls from OnStar agents assuring me the
problem had been escalated to the highest...
I had a 2010 CTS wagon with the latest 4G transmitter installed.
Suddenly October 2022 the tire pressures stopped being shown on my
monthly report. All other information showed correctly. For 15 months
ending in early 2024 the situation was never res...
