zeb321

This morning while driving to work in my car not my truck, I receive a notification on my phone from the myGMC app that states "Diagnostic Alert: Multiple tires on your 2024 Sierra are either flat or have low tire pressure.....". When I open the app this is what I see, notice the recommended psi!!! I don't know if the same thing is displayed on the trucks info center.

Sorry for the delayed update, I was away on vacation. I took my truck to the dealer a little over a week ago. They said there was a service bulletin for this issue and updated my PCM. My invoice states the following: C2A07 ECM indicated torque signal malfunction. Bulletin PIP593 for DTC. Update PCM with latest calibration O5YY175967812. Everything seems fine with the truck again, but I have only put about a 100 miles on since the PCM update.

I had this same issue happen to me this week. 2024 Sierra 2500HD with only 170 miles on it when it happened. I was just driving along when I received a Service ESC message followed by a Reduced Acceleration warning on the center display. I also had the forward collision, traction control and check engine lights come on. I also noticed the shudder/jerk that the OP mentioned, but I only had it when coasting to a stop. After parking my truck for a few minutes, I started it again and all the warning lights and messages were gone except for the check engine light. I took the truck for a short drive and it seemed to be back to normal. The only code that was present was P060C. According to the myGMC app, my truck is up to date with the N23-240810 update installed on 6/2/23.