2003 Cadillac CTS Owner's Manual - Page 362

Front Turn Signal and Fog Lamps A. Turn Signal Lamp B. Fog Lamp 2. Reach up behind the front bumper area from under the vehicle to access the lamp housing. 3. Remove the bulb socket from the housing by turning the bulb socket one-quarter turn counterclockwise. 4. Remove the electrical connector from the bulb by lifting the two plastic clips. 5. Pull the old bulb from the bulb socket keeping the bulb straight as you pull it out. 6. Install a new bulb. 7. Reverse the steps to reinstall the lamp assembly. To replace the front turn signal or fog lamps, use the following procedure: 1. Remove the protection shield located on the underside of the front of the vehicle by pulling out the push-pins located on the underside of the protection shield. Center High-Mounted Stop Lamp (CHMSL) It is recommended that this component be replaced as a unit. See your dealer. 6-36