1999 Cadillac Catera Owner's Manual - Page 271

yellowblue Headlamp Aiming If your vehicle is damaged in an accident, the headlamp aim may be affected. Aim adjustment to the low beam may be necessary if it is difficult to see lane markers (for horizontal aim), or if oncoming drivers flash their high beams at you (for vertical aim). If you believe your headlamps need to be re-aimed, we recommend that you take your vehicle to the dealer for service. However, it is possible for you to re-aim your headlamps by following the procedure in the service manual for your vehicle. Front Turn Signal Lamp NOTICE: To make sure your headlamps are aimed properly, read all instructions before beginning. Failure to follow these instructions could cause damage to headlamp parts. 1. With a screwdriver, unscrew the fastener on the headlamp cover and then remove it to access the turn signal lamps. 6-33