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.
Chevrolet Cobalt Owners Manual. Delayed Locking
If your vehicle has power locks, it will have the
delayed locking feature.
This feature will delay the actual locking of the doors
for up to five seconds when the power door lock switch
or remote keyless entry transmitter is used to lock
the vehicle.
If any door is open when locking the vehicl ...