Is Pure Consciousness aware of change, suffering, etc., and if so, how is it that It does not change, and/or suffer?

Phenomenal question. If a camera is shaking, stillness cannot be perceived. If a camera is still, both stillness and change can be perceived. So our consciousness must be changeless because we are able to perceive stillness. Consciousness is the witness of suffering, not the suffering. It is the witness of love and joy, but it is not love and joy.

It is simply the pure peace, the blank canvas, from which the perception of all phenomena is perceived. It is this changeless nonmaterial dimension that is the reason we have a sense of a continuing existence. Our bodies and minds constantly change, and yet we all sense a persisting presence throughout our entire lives.