It’s really hard to find a tracker on a vehicle if it has been hidden well. It might be outside the vehicle or it might be inside the vehicle. Some vehicles come with inbuilt trackers equipped as standard and by using an app/phone number it can be located by a family member or business owner through that. Trackers are available on the internet and so it is not just investigators who utilise them. If you think one might be installed then private investigators do often offer services to check a vehicle to see if a portable tracker is currently fitted.