Forum Discussion
MyGMC Trailer Light Test
My GMC trailer light test functionality appears to have been removed or lost in the most recent update of the app - March 2025. I use this feature frequently. I called OnStar support today 3/9/2025 a...
Apparently GM just released yet another mobile app update. No notice or release notes to be found anywhere but the app notified me that you no longer have to long hold the button to lock, unlock, or start the vehicle.
Still no response from GM about why the pro trailering features have been removed or if there is any intention to address customer’s displeasure with the decision.