I also have a 2015 Denali D-max and do not pay for the Onstar service, the basic is free for 5 years. With the Onstar and MY GMC apps on my I-phone I can unlock doors, find my truck and start it. My 6 month free part ran out last month but everything I need still works. I did the wait game with the Sirius radio and got a deal for both my vehicles for 6 months but I have to catch it before it expires and play the game again.

i had a car stolen once, called the police, they tracked it down, and were able to stop the thieves while running away with the car! got the car back, and it saved me an insurance claim and off course a great deductible!
can t complain about onstar here! and that was with the free basic program!

I had a 2001 Buick Century, and back then it was a $3000.00 option that some how my wife could not live with out, after the sales person filled her head that she and the children safety were at stake, well I took a 4 year loan on the car and after 3 years, I was contacted by Onstar and they told me that I was no longer going to be able to use my Onstar option, because it was analog based and they were going to digital, they offered no compensation or nothing they just dropped me, yet I was still paying for the car and the unit that was in the trunk that used up 1/4 of the trunk space, so ask me what I think of on star, I have bought other new cars and trucks since then and have disabled it right at the dealership before leaving the lot.

Dean

I respect that! but why not use it while it's free and it could save headaches?

I get a free 6 month of everything I think and then get some basic stuff for 5 years. But the kicker is they want you to pony up the $35/month for full service after the 6 month trial. I might do it, but will wait. I like the idea of waiting them out ans
d seeing if the price drops.

I just ran my HTC cell phone through the laundry. My pants were clean but my phone was hosed!

I figured I'd get one of the phones that support the OnStar app to replace it. But I have insurance coverage on the HTC and they replace it with an identical one. Damn! The mobile app would be one of the things I might actually use.

I am very old school and proud off it, and I feel that if I did take there free offer that, I would have accepted the way I was duped and treated by them, and would have had more of a toll on my self respect, then any headaches I could ever had or avoided by not using the service. I did not have that service all my life until then and had managed to survive with out it and still have to this day.

Dean

We have on star in our 09 Sierra. We keep a few minutes of talk time on the phone part of it. it has come in handy in the past because it gets service when cell phones don't.

I get 5 months of Sirius for $20 everytime......Works like a charm...Call and tell them I want to cancel because it's too expensive and listen to the offers...I have cut it off a time or 2 and within a few days they were calling with better deals..

there is a fuse you can remove...had to disable in my truck to change to a tuned ecm from duramax tuner, after complete just put fuse back in