Chevrolet 2011 Express 1500 Cargo Owner's Manual page 309

7. Install the new bulb into the
headlamp assembly and connect
the electrical connector.
8. Reverse the steps to reinstall the
headlamp assembly.
To prevent headlamp vibration
and shortened bulb life, be sure
to insert the headlamp assembly
tabs in the slots at the lower
portion of the housing.
A. Headlamp retainer screws
B. Headlamp retainer
C. Sealed beam headlamp bulb
1. Remove the four screws (A)
from the headlamp retainer (B).
Pull the retainer (B) out and set
it aside.
2. Pull the bulb (C) forward to gain
access to the electrical
connector.
3. Disconnect the electrical
connector (B) and remove the
headlamp bulb (A).
4. Reverse Steps 1 through 3 to
reinstall the headlamp.