Transmission Control Module I was at an intersection when the TCM malfunctioned halfway through and I lost all power to my motor. I was pulling a large trailer and cross traffic had to slam on brakes to keep from hitting me. My truck will not move faster that a few miles an hour now that it is in limp mode. I am a police officer and I had an onboard diagnostic tool that showed that there was no communication to the TCM. Stabilitrack warning lamp and check engine light are now on. It all happened at once no warning.

- Lancaster, OH, USA

I was driving 75 mph in traffic when my steering wheel jerked hard and the truck made a loud noise from underneath. Lights on dash engine light and traction light on. Dash read out said service stabilitrak and service traction control. I could have been hit from behind. The truck was stuck in 3rd gear. Would not go but under 30 mph. This all happened [XXX]. My dad had stroke, I wasn't able to assist him because of this failure. Had truck taken by wrecker to dealership. Told me it was failed Transmission control module, which are and have been on backorder order since summer of 2022 globally. I drove back home and sent TCM to be repaired. $1286 dealership charged me $146 wrecker was $125. This is the 2nd time this truck has endangered my life. 1st time it was the 1st injector that put it into limp mode. These trucks with the limp mode, are going to get some one killed. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Silsbee, TX, USA

Service stabilitrak warning light came on while driving on highway at 60mph. Truck went into "limp mode". no trans pridal display. Truck driven slowly off highway. At the service dealer they determined that the transmission control module failed at 79,530 miles. Vehicle covered under the federal emissions warranty 8 year/ 80,000 however GM refused to honor.

- Olympia, WA, USA