How long is the SiriusXM free trial? I got an e-mail from them a few days after I bought my Cruze. Anyways the e-mail wasn't really forthcoming with the details. I am a bit weary about signing up to services that I cannot cancel online. To my knowledge cancellations must be done by phone with them. Cancelling online is so much better. You don't get the hassles of getting the 3rd degree why your cancelling or talked into staying and the like.