There's some chance LLMs contain representations of whatever's in the brain that's responsible for consciousness. The text it's trained on was written by humans, and all humans have one thing in common if nothing else. A good text compressor will notice and make use of that. As you train an LLM, it approaches the ideal text compressor.

Could that create consciousness? I don't know. Maybe consciousness can't be faithfully reproduced on a computer. But if it can, then an LLM would be like a brain that's been cut off from all sensory organs, and it probably experiences a single stream of thought in an eternal void.