its really annoying. Whatever I am playing be it pandora, podcast, or music, the truck when put into Sync it plays the last tunes. Let's say I run navigation, as soon as it's turned off, the music starts playing at random. Is this a setting in the truck or the iPhone? I want to end that once and for all...

 

There should be an option in the truck to turn off just Bluetooth audio for your phone. Probably called Bluetooth stereo. This leaves the Bluetooth phone calls working. This will make it so music audio cannot play via Bluetooth.

 

I can totally take calls but as soon as it's off, bam, it starts playing music again.

Now if if I put it in phone, radio, aux mode it won't. Only when the Bluetooth is connected. I don't listen to anything but Bluetooth so it's a little annoying as I had respectable folks in my truck one time and as soon as navigation went off it just started playing my personal nutty music. 😆

 

Yep.
Bluetooth Stereo.