[header] How to look for a gps on your vehicle [title] To check for one on your car, you need to inspect underneath and around the periphery of your car. [title] First you should learn a standard gps device. [step] Typically, gps units have two parts, the electronics component and the antennae respectively. 
The electronic component is usually in a plastic case with a magnet on the bottom, and connected by a wire to its antennae. Generally, the electronics unit is much larger than the antennae.