GENERAL MOTORS issued a recall on the CENTURY and REGAL models

Certain vehicles do not comply with the requirements of CMVSS 108 - Lighting Equipment and Retroreflective Devices. The vertical vehicle headlamp aiming device (VHAD) may not be calibrated properly. With the vertical VHAD set to zero, the vehicle headlamp may not meet the photometric aim requirements of the standard at several measured locations. Also the VHAD vertical adjustment bubble does not maintain consistent positioning due to thermal instability. Correction: An insert containing instructions for optically aiming the headlamps will be provided for the owner's manual.