GMC SIERRA 1994 Manual page 309

Tailgate Marker Lights
1. Use a screwdriver
to gently pry the
lenshulb
assembly from
the lens holder.
2. Unplug the
lenshulb
assembly at the
connector wire.
3. Plug in a new
lensbulb
assembly and
push the
connector wire
into the hole in
the tailgate.
4. Snap the
lenshulb
assembly into the
lens holder.
Roof Marker Lights
1. Remove the
screws and lift off
the lens.
2. Pull the bulb
straight out of the
socket.
3. Put a new bulb
into the socket
and push it in
until it is tight.
4. Replace the lens and tighten the screws.
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