Chevrolet 2007 Equinox Owner's Manual page 139

Press the lever down and align the crossrails
on both sides with the holes on the siderails.
Move the crossrail by hand. There will be a
notable click as the pins align into the holes
locking the crossrail into place.
Make sure lever is in the down position, and
that you are not able to slide the crossrail with
your hand when properly in place.
To reposition the crossrail, pull up on the end
levers of the crossrail to the upright position.
This will release the pins from the holes in the
siderail. You will be able to move the crossrail
into a new position.
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