Most of the feeling in the back and top of the head is transmitted to the brain by the two greater occipital nerves. There is one nerve on each side of the head. Emerging from between bones of the spine in the upper neck, the two occipital nerves make their way through muscles at the back of the head and into the scalp. They sometimes reach nearly as far forward as the forehead, but do not cover the face or the area near the ears; other nerves supply these regions.
When Renewing at a Branch Office: 1  Bring your driver's license or other acceptable ID. 2  Bring glasses or contact lenses needed for driving. 3  You will be asked to take a vision test.  Pay by cash, check, money order, Discover, MasterCard or Visa debit or Credit Card.
Instructions. Open the hood of the GMC Envoy. Pull up on the retaining tabs at the top of the headlight assembly. Push in on the retaining tab on the wiring harness connector. Pull the connector apart to disconnect the wiring harness. Remove the headlight assembly from the front of the truck.Pull the plastic cover off of the rear of the light assembly. Turn the bulb counterclockwise, then pull it out of the headlight assembly. Pull the bulb from the socket, and discard it.Insert the new bulb into the socket. Position the bulb in the headlight assembly, and turn it clockwise to lock it in place.pen the hood of the GMC Envoy. Pull up on the retaining tabs at the top of the headlight assembly. Push in on the retaining tab on the wiring harness connector. Pull the connector apart to disconnect the wiring harness.