Chevrolet 2005 Equinox Owner's Manual page 104

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.
2-36
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.