GMC 2007 Envoy - Manual (Page 389)

2. Then go to the front of the vehicle and
release the secondary hood release.
3. Lift the hood, release the prop rod from its
retainer and put the prop rod into the slot in
the hood.
Before closing the hood, be sure all the filler caps
are on properly. Then lift the hood to relieve
pressure on the prop rod. Remove the prop rod
from its slot in the hood and return the prop to its
retainer. Lower the hood 6 to 8 inches (15 to
20 cm) above the vehicle and release it to latch
fully. Check to make sure the hood is closed
and repeat the process if necessary.
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