Table 1 shows one common electrical system related problems of the 2013 GMC Sierra 2500.
| Problem Category | Number of Problems |
|---|---|
| Electrical System problems |
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.
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.