Chevrolet 2008 Equinox Owner's Manual page 325

Turn the bulb retaining ring (B) counterclockwise to
remove it and then pull the bulb assembly
straight out.
For all other bulbs, turn the socket counterclockwise
and pull it out from the headlamp assembly. Pull
the bulb straight out from the socket.
6. Press the clip (A) on
the electrical connector
when replacing the
low-beam or high-beam
bulb, then pull it
straight off.
7. Push the new bulb into the socket and reinstall the
socket into the headlamp assembly by turning it
clockwise.
For the low-beam or high-beam bulb, install the new
bulb being sure to align the notches in the bulb with
the notches in the headlamp assembly.
8. Place the retaining ring over the bulb/socket and
turn it clockwise to tighten it and secure the
bulb/socket.
9. Connect the electrical connector.
10. Reverse Steps 1 through 5 to reinstall the headlamp
assembly.
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