GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Caution: The high intensity discharge system produces high voltage and current. To reduce the risk of severe shocks and burns:

   • Never open the high intensity discharge system ballast or the arc tube assembly starter.
   • Never probe between the high intensity discharge system ballast output connector and the arc tube assembly.

Caution: The high intensity discharge system produces high voltage and current. In order to reduce the risk of severe shocks and burns, the battery negative cable must be disconnected any time service work is being performed on or around the high intensity discharge system.

Notice: When removing or replacing the arc tube, the arc tube must not contact the side of the headlamp housing or the bulb shield. Damage to the arc tube may result.


    Object Number: 816582  Size: SH
  1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Remove the headlamp. Refer to Headlamp Assembly or Headlamp Bulb and/or Cornering, Sidemarker, Park, Turn Signal Bulb Replacement .
  3. Remove the arc tube cover from the headlamp housing.

  4. Object Number: 816586  Size: SH
  5. Disconnect the electrical connector (1) from the arc tube.
  6. Remove the arc tube by pressing retaining clip (2) downward to release clip.
  7. Remove the arc tube.

Installation Procedure


    Object Number: 816586  Size: SH
  1. Install the arc tube into the headlamp housing.
  2. Press down on retaining clip (2) to lock arc tube in place and reconnect electrical connector (1).
  3. Install the arc tube cover to the headlamp housing.
  4. Install the headlamp to the vehicle. Refer to Headlamp Assembly or Headlamp Bulb and/or Cornering, Sidemarker, Park, Turn Signal Bulb Replacement .
  5. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .