^^^this is why I put a seperate gps tracker on my 2018 silverado and my 2012 yukon, otherwise you need to have lojack installed
onstar can track the vehicle but you have to file a police report first
Factory-Installed (Automaker) Systems
GM's OnStar
Stolen vehicle recovery is one of many features of GM's OnStar service, which is better known for its crash notification feature. If your car is stolen, you first file a report with the police, then contact OnStar immediately. If all goes well, the police and OnStar will work together to recover your vehicle. If the thief leads the police on a chase, OnStar can use a unique new feature,
Stolen Vehicle Slowdown, to assist police in their capture and to prevent accidents.