Adjust the head restraint so that the top of the restraint is at the same height as the top of the occupant's head.
This position reduces the chance of a neck injury in a crash.
Pull the head restraint up to raise it. To lower the head restraint, press the button, located on the top of the seatback, and push the restraint down.
Chevrolet Cobalt Service & Repair Manual. Noise, Diagnosis
A visual inspection must always
be performed to confirm the presence of aftermarket components, potential
collision damage, or areas of concern.
A noise produced by a vibration
can be diagnosed in the same manner as a vibration. A noise produced by
wind, leaks, or ...