Check power steering fluid and top off
 

The power steering pump is on the back of the engine on the passenger side. I'm pointing at it's location.
https://www.gmforum.com/howto/tech-i...1/PB270048.jpg

If you lean over the back of the engine you will see the cap.
https://www.gmforum.com/howto/tech-i...1/PB270047.jpg

Reach in back and remove the cap and check your level. If your low you will need to add some.
https://www.gmforum.com/howto/tech-i...1/PB270049.jpg

Only use power steering fluid. You will need to use a clean funnel. If you have a long neck funnel this will be easier.
https://www.gmforum.com/howto/tech-i...1/PB270050.jpg

Add only a little fluid as this is not a very large reservoir. Remove funnel and check level again. If still low, add more until your between the lines.