GMC 2007 Envoy - Manual (Page 431)

Headlamps
To replace one of these bulbs, do the following:
1. Open the hood. Hood Release on page 388
for more information.
2. Lift the two headlamp retaining clips.
3. Pull the headlamp assembly away from the
vehicle to access the electrical connectors.
4. Remove the cover from the headlamp bulb.
5. Remove the bulb socket that needs to
be replaced by turning it counterclockwise.
6. Disconnect the electrical connector from the
old bulb.
7. Plug the electrical connector into the new bulb
using care not to touch the glass with your
fingers.
8. Install the new bulb into the socket and turn it
clockwise to secure.
9. Reinstall by reversing Steps 1 through 6.
10. Press down on the headlamp retaining clips to
secure the headlamp assembly.
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