This is a video showing the rear brakes on a 2009 Chevrolet Cobalt after replacement. It has new wheel cylinders, hardware, and wheel cylinders.
I find this helpful at times if spring get moved when doing brakes.
Parts used
Raybestos 800PG Professional Grade Drum Brake Shoe Set: https://amzn.to/36c8j40
Raybestos H7326 Professional Grade Drum Brake Hardware Kit: https://amzn.to/36c911a
Raybestos WC370199 Professional Grade Drum Brake Wheel Cylinder: https://amzn.to/38eyZnn
Raybestos WC370198 Professional Grade Drum Brake Wheel Cylinder: https://amzn.to/32geC59
Permatex Ceramic Extreme Brake Parts Lubricant 24125 https://amzn.to/363Hcb2