Hummer 2003 H2 Owner's Manual page 371

Taillamps
1. Open the liftgate.
A. Stoplamp
B. Turn Signal Lamp
-
C. Back Up Lamp
2. Remove the two screws
from the rear lamp
assembly and remove
the rear lamp assembly.
3. Turn the bulb socket counterclockwise to remove it
from the taillamp housing.
5. Press a new bulb into the socket, insert it into
the taillamp housing and turn the socket clockwise
until it is locked in place.
6. Reinstall the rear lamp assembly and tighten
the screws.
4. Pull the bulb straight out
from the socket.
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