Posts Tagged: PCM relearn
Security light on in GM vehicles — What it means
Learn what to do if you see the security light on in a GM vehicle. Any time you see the security light on in a GM vehicle, that’s a sign of a problem with the immobilizer system. GM has made multiple changes to their immobilizer systems over the years. In some cases, the system will let you start the vehicle and drive, but in the vast majority, the system will disable the starter or fuel, or let the engine start and then immediately shut it off. GM allows you to … Read More