Henry Brown Buick GMC

I went in to have an oil change. They let me know there were some things on my 2017 gmc Acadia that needed to be changed. I agreed with two of the services due to it being overdue. However, my car has sensors for everything and I also have onstar which alerts me when anything in my car needs to be taken care of. So when they said my car battery was bad and needed to be changed it was a shock. First of all my on star service didn't alert me, and I have the capability to look on my dash to see the voltage of my battery which was 14 volts and only needs 12 volts. I turned the battery down and said not at this time just to change the oil. I went ahead and took it to auto zone just to be sure I didn't need a battery for my car. They did the test and said my car battery was very good and I did not need a new battery. They apologized for the dealership wanting to sell me a car battery when in fact I never needed one. Was very disappointed with them for telling me this. I have never been treated like this before ever. How sad. I will not trust them with anything now. Always get a second opinion!!!!!!