2004 Chevrolet Impala Owner's Manual - Page 317
2004 Chevrolet Impala Manual
Page 317 highlights
Taillamps, Turn Signal, Stoplamps and Sidemarker Lamps 2. Remove the two upper (convenience net) wing nuts. 3. Pull the carpet away from the rear of the vehicle. 4. Unscrew the two remaining hex nuts. 5. Pull the assembly from the body carefully. 6. To remove a socket, press the tab, turn the socket counterclockwise and pull it out. 7. Pull the old bulb out. Do not twist it. 8. Push the new bulb into the socket. 9. Reinstall the socket in the assembly. Tighten the socket by turning it clockwise. 10. Reinstall the assembly and the two lower wing nuts. 11. Reinstall the carpeting. 12. Reinstall the upper (convenience net) wing nut and convenience net, if equipped. A. Rear Sidemarker Lamp B. Taillamps/Turn Signal and Stoplamp 1. Open the trunk. Remove the convenience net, if your vehicle has one. Unhook the net from the upper wing nut. 5-55