The tires and wheels on your vehicle were aligned and balanced carefully at the factory to give you the longest tire life and best overall performance. Adjustments to wheel alignment and tire balancing will not be necessary on a regular basis. However, if you notice unusual tire wear or your vehicle pulling to one side or the other, the alignment might need to be checked.
If you notice your vehicle vibrating when driving on a smooth road, the tires and wheels might need to be rebalanced. See your dealer/retailer for proper diagnosis.
Chevrolet Cobalt Service & Repair Manual. Window Regulator Motor R&R
Front
Coupe
1.
Remove interior trim panel.
2.
Remove water deflector.
3.
Move window to full up position and
secure in place with tape.
4.
Remove side door window regulator moto ...