GMC 2001 C3, Owner'S Manual, Page: 315 / 388

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6. Put the new bulb into the bulb socket. Use care not
to touch the bulb with your fingers or hands.
7. Put the bulb socket into the turn signal housing and
turn it clockwise until it locks.
8. Put the turn signal housing back onto the vehicle
placing the hook and posts on the inner side into the
alignment holes first and then the outer side into the
retainer bracket until you hear a click.
9. Put the headlamp lens assembly back into
the vehicle.
Center High-Mounted Stoplamp (CHMSL)
and Cargo Lamp
1. Remove the screws and lift off the lamp assembly.
A. Cargo Lamps
B. Center High
-
Mounted Stoplamps (CHMSL)
2. Remove the CHMSL bulb holder back plate from
the housing by pressing the release tabs.
3. A CHMSL bulb is removed by pulling the bulb
straight out from the holder back plate. A cargo bulb
is removed by turning the socket counterclockwise
and pulling the bulb straight out.