Auto music with Bluetooth

So whenever I get in my truck with the phone bluetooth on when I turn on my bluetooth my google music starts to play. I can not seem to figure out how to change that setting. I thought I did but every time I get in it starts. I can not stand it. I have a samsung s6. Anyone know what I am missing?

 

Mine does this too... really annoying.
Plays my custom ring tones or custom text sounds.

 

Bump for suggestions.

 

Similar thing happens with my iPhone, but only if I have the source set to Bluetooth. If I already have my phone's music app opened, it will start playing wherever it left off. If my phone's music app isn't open, it starts playing all my songs on shuffle. Haven't found a way to not have Bluetooth music automatically play when it connects, other than to have another music source selected, i.e. FM, AM, CD...

OP what are you trying to do? Do you want the truck to not play anything until you've selected a song? Are you trying to listen to another source of music?

 

Mine does this too. I frequently have bluetooth audio connected because I usually have waze running on my attached phone, but as soon as my phone connects it opens my music app and starts playing. Annoying to have to manually hit pause on the head unit or stop it on my phone every time.

If I want it to play music over bluetooth, I want to press play.. not have it do it for me whether I want music or not.