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Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12017481) - 2019 - CRC - 11/5/18
274 VEHICLE CARE
Base level
To replace one of these lamps:
1. Turn steering wheel in opposite
direction as the bulb in need of
replacing.
2. Remove fasteners retaining the
front wheel liner.
3. Pull back wheel liner to expose
back of turn signal lamp.
4. Remove turn signal bulb socket
from lamp housing by rotating
counterclockwise.
5. Replace the bulb and reverse
Steps 1–4 to reinstall.
Back-Up Lamps
To replace one of these bulbs:
1. Remove the fasteners to remove
the trailer hitch cover.
2. Access the lamp through the
opening in the underbody.
3. Disconnect the electrical
connector from the bulb
assembly.
4. Turn the bulb socket
counterclockwise and pull the
bulb straight out of the socket.
5. Replace the bulb and reverse
Steps 1–4 to reinstall.
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