Squeaking sounds from the rear when I hit the brakes?

Hello, I'm Danny.

Here is the information you requested. Here is a tutorial showing how to replace rear brake pads:

https://www.2carpros.com/articles/how-to-replace-rear-brake-pads-and-rotors

I've attached picture steps below on how to replace the rear brake pads and rotors on your Silverado. Hope this helps and thanks for using 2CarPros.