The hydraulic clutch linkage in your vehicle is self-adjusting. This system does not have its own reservoir. It receives fluid from the brake master cylinder reservoir.
See Brakes on for more information.
Manual Transmission Fluid
Cooling SystemChevrolet Cobalt Service & Repair Manual. Power Steering System Drain & Refill
1.
Remove power steering reservoir and
disconnect return hose.
2.
Start engine and drain fluid into a
suitable container.
3.
Install hose and reservoir.
4.
Fill reservoir to ...