Installing the tracking device requires a warrant, meaning it's classified as a "search," not as testimony. It's 4th Amendment territory, not 5th Amendment.
If removing the tracking device is pleading the 5th, then putting the tracking device on at all would be a violation of the 5th Amendment. You can philosophize a testimonial aspect into almost anything, but the courts take a more narrow view of what gets protected by the 5th.
To continue hypotheticals, once you know its there it becomes a voluntary act to continue. You have to continue to (allow) reporting of your location. That sounds more like 5th territory.
If removing the tracking device is pleading the 5th, then putting the tracking device on at all would be a violation of the 5th Amendment. You can philosophize a testimonial aspect into almost anything, but the courts take a more narrow view of what gets protected by the 5th.