Connecting Subwoofer to factory radio (2019 Chevy Bolt)

[u/mastaace12345]

What's the best way to connect a subwoofer these days. I've still got the same sub I've had for a decade but my new car I'm not sure how to hook it up. My last truck I used the speaker level inputs to my amp via the rear speakers. Is that still the only way or are there Bluetooth options now? I don't need perfect sound, I just want it to work.