Chevrolet 2007 HH7 Owner's Manual page 333

To replace one of these bulbs, do the following:
1. Open the liftgate. See Liftgate on page 106 for
more information.
2. Remove the cover in the rear cargo area of
the vehicle to access the bulbs.
3. Turn the bulb socket counterclockwise and
pull it out of the lamp housing.
4. Pull the bulb straight out of the socket.
5. Install a new bulb. When installing the bulb
socket into the assembly, line up the tabs
with the slots in the bulb assembly.
6. Reverse the steps to reinstall.
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