GMC Yukon Owner's Manual page 447

2. Then go to the front of the vehicle and locate
the secondary hood release, near the center
of the grille.
3. Push the secondary hood release to the right.
4. Lift the hood.
Before closing the hood, be sure all the filler caps
are on properly. Then bring the hood from full
open to within 6 inches (152 mm) from the closed
position, pause, then push the front center of
the hood with a swift, firm motion to fully close
the hood.
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