Windshield wiper blades should be inspected for wear or cracking. See Scheduled Maintenance for more information on wiper blade inspection.
Replacement blades come in different types and are removed in different ways. For proper type and length, see Maintenance Replacement Parts.
Here is how to remove the wiper blades: 1. Pull the windshield wiper arm away from the windshield.
2. Push the release lever and slide the wiper assembly toward the driver side of the vehicle.
3. Install a new blade by reversing Steps 1 and 2.
Chevrolet Cobalt Service & Repair Manual. General Service
Two basic types of power assist
mechanisms are used: vacuum assist diaphragm assemblies, which use engine
vacuum or in some cases vacuum pressure developed by an external vacuum
pump. The second type is a hydraulic pressure assist mechanism, which use
pressure developed by an ...