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. Crankshaft Damper R&R
Removal
1.
Raise and support vehicle.
2.
Remove front tire and wheel assembly.
3.
Remove front fender liner.
4.
Turn drive belt tensioner clockwise.
5.
Rem ...