How to deactivate onstar<br>Contact onstar. If you want to cancel your onstar service immediately, you will need to contact the company and speak with an adviser. [substeps] The simplest way to speak with an adviser is to press the blue button on the onstar system installed in your vehicle.
Onstar is included in most vehicles.
( z1 include :ARG1 ( z2 product :name ( z3 name :op "Onstar" ) ) :ARG2 ( z4 vehicle :mod ( z5 most ) ) )