Global Machinery Company Sierra 1999 - Manual (Page 341)

yellow blue
6-43
A. Stoplamp
B. Turn Signal Lamp
C. Back - up Lamp
3. Press the release tab and turn the bulb
socket counterclockwise to remove it from the
taillamp housing.
4. Pull the bulb straight out from the socket.
5. Press a new bulb into the socket and turn the socket
clockwise into the taillamp housing until it clicks.
6. Replace the rear lamp assembly and tighten
the screws.
7. Close the tailgate.