No. Cell sites will always know your location. Additionally, in the U.S. all cellphone are required to support E911 which requires GPS location. Any phone out of compliance can have its IMEI blocked on that network.
The benefit of open source phones in this regard could potentially be additional control over which apps can access GPS or additional visibility into which apps are requesting it. This already exists on closed source phones, but the devs could make permissions more obvious and potentially give more privacy tips if they so desired. Maybe even do something cool like have a red icon on your home screen that warns you may be giving apps too many permissions or if permissions changed without your interaction.
Agreed, I just meant that the phones baseband is required to be connected to a GPS receiver. With an open hardware / open source phone, you might have more visibility into what is going on.
The benefit of open source phones in this regard could potentially be additional control over which apps can access GPS or additional visibility into which apps are requesting it. This already exists on closed source phones, but the devs could make permissions more obvious and potentially give more privacy tips if they so desired. Maybe even do something cool like have a red icon on your home screen that warns you may be giving apps too many permissions or if permissions changed without your interaction.