GMC Sierra 3500HD 2001, Owner'S Manual, Page: 222 / 321

6-39
Roof Marker Lamps
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. Reinstall the lens and tighten the screws.
Taillamps
1. Using your hands, peel the rubber seal away from
the lens.
2. Lift the lens off the
lamp assembly.
3. Slide the socket out of the lamp assembly.
4. Push in gently on
the bulb, turn it
counterclockwise
and remove it from
the socket.
5. Put in a new bulb and, pushing in gently, turn it
clockwise until it is tight.
6. Put the socket back in the lamp assembly and
reinstall the lens and lens seal.