Silicone grease on weatherstrips will make them last longer, seal better, and not stick or squeak. Apply silicone grease with a clean cloth. During very cold, damp weather frequent application may be required.
See Recommended Fluids and Lubricants.
Care of Safety Belts
Washing Your VehicleChevrolet Cobalt Owners Manual. Rocking Your Vehicle to Get It Out
Turn the steering wheel left and right to clear the area
around the front wheels. Turn off any traction system.
Shift back and forth between R (Reverse) and a forward
gear, or with a manual transmission, between 1 (First) or
2 (Second) and R (Reverse), spinning the wheels as
little as possible. ...