Cadillac 2014 ATS Owner's Manual page 316

1. Back-Up Bulb Socket
2. Back-Up Lamp Assembly
To replace one of these bulbs:
1. Reach under the rear fascia and
locate the back-up lamp
assembly.
2. Remove the bulb socket (1) by
turning counterclockwise and
pulling straight out of the lamp
assembly (2).
3. Pull the bulb out of the socket.
4. Install the new bulb in the bulb
socket.
5. Install the bulb socket by turning
clockwise.
1. Bulb Socket
2. Bulb
3. Lamp Assembly
To replace one of these bulbs:
1. Push the lamp assembly (3)
toward the center of the vehicle.
2. Pull the lamp assembly down to
remove.
3. Turn the bulb socket (1)
counterclockwise to remove it
from the lamp assembly (3).