Where is the power steering pump located on a 2002 Chevy impala ls.?

On a 2002 Chevy Impala LS, the power steering pump is typically located on the front of the engine, driven by a belt. It's usually attached to the engine block, near the alternator and other belt-driven accessories. To be precise, you'll need to look at the engine bay itself; it's a fairly substantial unit and easily identifiable once you see it.