2004 Buick Regal Owner's Manual - Page 267

Back-Up Lamps 4. Twist and pull the bulb socket (B) from the trunk lid. 5. Twist and pull the old bulb from the bulb socket. 6. Twist and push the new bulb into the lamp socket. 7. Twist and push the lamp socket into the trunk lid covering. 8. Reverse Steps 2 and 3 to reinstall the lamp covering. Replacement Bulbs Exterior Lamps Back-Up Lamps Center High-Mounted Stoplamp (CHMSL) Front Turn Signal and Parking Lamps High-Beam Headlamps Low-Beam Headlamps 1. Open the trunk. 2. Remove the seven hex nuts (A) from the lamp covering. 3. Remove the lamp covering. Taillamps and Stoplamps/Turn Signal Taillamp Bulb Number 1156 3155 4157NAK 9005 9006 3057 194 For any bulb not listed here contact your dealer. 5-59