GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2008 🢒 SRX 🢒 Body Systems 🢒 Lighting 🢒 High Intensity Discharge Headlamp Ballast Replacement

Removal Procedure

    Caution: Refer to Battery Disconnect Caution in the Preface section.

    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.


    Object Number: 893557 Size: SH
  1. Remove the headlamp. Refer to Headlamp Replacement .
  2. Remove the screws (1) from the headlamp.

    3. Object Number: 889789 Size: SH

    Important:  Be careful when disconnecting the electrical connectors.

  3. Disconnect the electrical connectors (2).

    4. Object Number: 889787 Size: SH
  4. Remove ballast (1) from headlamp.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 893557 Size: SH

    Important: Always replace the old gasket with the gasket provided with the new ballast .

  1. Install the ballast (2) to the headlamp.

    2. Tighten
    Tighten the ballast screws (1) to 2 N·m (18 lb in).

  2. Install the headlamp. Refer to Headlamp Replacement .