Installation Procedure

IMPORTANT:

Replace a high beam bulb with another high beam bulb. The high beam bulb has a black socket.
Replace a low beam bulb with another low beam bulb. The low beam bulb has a gray tip and a grey socket.

Fig 1: View Of Headlamp Socket & Bulb

Courtesy of GENERAL MOTORS CORP.

Connect the electrical connector to the socket.
Install the bulb and socket to the housing by rotating the bulb and socket clockwise, locking the retaining tabs to the housing.
Install the access cover to the rear of the headlamp assembly
Install the headlamp. Refer to Headlamp Replacement (Envoy) , Headlamp Replacement (Rainier) or Headlamp Replacement (TrailBlazer) .