Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
Vehicle Care 351
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.
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