GMC 1994 Sonoma Owner's Manual page 255

Rear Lights
1. Open the tailgate.
2. Remove the light
assembly screws
near the tailgate
latch and pull out
the light
assembly.
3.
4.
Pull the light
assembly away
from the pickup
side panel.
Turn the socket to
the left to remove
it. Push the tab in
while
you
turn
the socket.
5. Pull the bulb out.
6. Push the new bulb into the socket.
7. Put the socket into the light assembly and turn the socket to the right
until it locks in place.
8. Replace
the light assembly. Install and tighten the screws.
9. Close
the
tailgate.
6-37