New York Senator Chuck Schumer has asked the Federal Trade Commission to investigate a change in rules by General Motors' OnStar, the popular driver assistance technology provider.

The new changes would allegedly enable the company to keep tracking vehicles locations and speeds of vehicles even after their owners cancel the service. In order for the drivers to make the company stop tracking people, the users will have to formally opt-out of the service.

General Motors said that OnStar tracks a number of specific variables, including oil life, tire pressure, and a vehicle's fuel economy. The car's location and speed is tracked via its GPS system as well as a variety of statistics related to vehicular accidents.

OnStar's updated privacy policy has pointed out to its users that must inform other users of their vehicles that the company tracks the car. It also says that the users can stop Data Connection by contacting an OnStar Advisor.

In a move that will raise concerns among privacy groups, the company also said that it has the right to sell the information to others. About six million drivers in the US use service from the company.

"By tracking drivers even after they've canceled their service, OnStar is attempting one of the most brazen invasions of privacy in recent memory," said Senator Schumer in a statement.