Money GM charging new buyers $1,500 for ‘optional’ OnStar plan even if they never plan to use it August 10, 2022August 10, 2022 Jamie L. LaReau, Detroit Free Press Comments Off on GM charging new buyers $1,500 for ‘optional’ OnStar plan even if they never plan to use it GM labels it as an "option," but its new cars now include a $1,500 add-on for a subscription service whether a customer wants it or not.