How do i clear service battery charging system message and service power steering

What is your question?

I replaced battery and alternator and then the messages service battery charging system and service power steering message appeared and I can't get them to clear on my Chevrolet Equinox 2011 2.4 liter. power steering is electric

What makes this problem better or worse?

Never had problem til I replaced bad battery and alternator

How long has your 2011 Chevrolet Equinox had this problem?

2 weeks