GMC 2009 Sierra - Manual (Page 367)

Taillamps, Turn Signal, Stoplamps
and Back-up Lamps
To replace a taillamp bulb:
1. Open the tailgate. See Tailgate on page 2-13
for more information.
2. Remove the two taillamp assembly screws
near the tailgate latch.
A. Stoplamp/Turn
Signal/Taillamp
B. Stoplamp/Turn
Signal/Taillamp
C. Back-up Lamp
D. Sidemarker Lamp
3. Pull out the taillamp assembly.
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