For service and parts needs, visit your dealer/retailer.
You will receive genuine GM parts and GM-trained and supported service people.
Genuine GM parts have one of these marks:

Accessories and ModificationsChevrolet Cobalt Service & Repair Manual. Windshield Wiper Arm, Replace
Removal
1.
Turn ignition ON.
2.
Turn wiper switch to DELAY.
3.
Turn ignition OFF when wiper arms are
paused at bottom of wipe pattern.
4.
Remove wiper arm nut cover (1),
Fi ...