One problem related to headlights has been reported for the 2002 Cadillac Catera. The most recently reported issues are listed below.
Sealed headlights that have residue on the inside of the headlights that you can not replace just the bulbs. You have to replace the entire unit to resolve the problem, that cost over 600. 00 each. This would be on a 2002 cadallac Catera.