2022 Chevrolet Suburban Electrical System

Onstar, my vehicle's core safety communication system, stopped working without notice, without an alert on the dash. Nothing. I press the onstar button and nothing happens. What if I was in trouble? Didn't have my phone? The issue was not communicated to me through the infotainment system. This seems like a serious issue.

Onstar module failed, no longer have wifi, navigation or other onstar supported features. Cannot perform system updates for vehicle due to onstar module. Cannot use app due to onstar module.

The 2022 Suburban lost all power and came to a dead stop in the travel lane of a busy major highway. The vehicle becoming disabled in the middle of flowing travel resulted in a rear end crash from a vehicle traveling approximately 60 MPH.

It was diagnosed as the Telecommunication Module, this part malfunctioned causing issues with audio in the vehicle. The audio would at times play normal, at times go completely out losing all sound to turn signals, hazard signals, and safety sensor audios inside the vehicle. It would additionally lose communication between the key fob and the unit causing warnings during driving and non-start issues. With that said, the lose of audio when expecting safety sensor sounds, or sudden audio on complete full volume with the only resolution being to shut the car off is a safety issue. The vehicle had to be pulled over on the travel portion of the highway to resolve the sound issues on multiple occasions. Software updates, radio head change didn’t matter, until it was diagnosed as the module described above. Occurrences were completely random.