GMC 1996 Sonoma Owner's Manual page 259

Composite Headlamps
1. Open the hood.
2. Remove the black
protective caps from the
removal pins at the top
of the radiator support.
Use a hex socket to
unscrew the pins.
3. Pull the headlamp lens
assembly out. (Some
vehicles may have
side-by-side bulbs.)
4. Unplug the electrical connector.
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