The only way to turn off GPS cell phone tracking is by turning off your cell phone.

or remove the GPS receiving antenna

That depends on your cell phone model. Check with your carrier, or online to see if your specific phone is GPS enabled. Several carriers offer GPS tracking features on specific phones, for the purpose of tracking children.

Most carriers have a service to let you use the GPS feature. You may need to pay for the tracking.

Most cell phone carriers now have GPS tracking. One of the leading phone companies to advertise GPS tracting was Boost mobile.

An app that you can download for cell phone gps tracking, if you have an android phone, is family GPS tracker by Life 360. It won best cell phone tracker in 2010.

Yes the government can use cell phone gps tracking and do so several thousand times a year. The law says our rights as citizens are not violated when the phone company reveals their records to them.