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.

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  1. Remove the battery negative cable.
  2. Remove the radiator grille from the vehicle. Refer to Grille Replacement in Exterior Trim.
  3. Remove the front bumper assembly from the vehicle. Refer to Front Bumper Impact Bar Replacement in Bumpers.

  4. Object Number: 364376  Size: SH
  5. Remove the starter cable retainers from the headlamp ballast.
  6. Remove the starter cable from the headlamp ballast.

  7. Object Number: 392915  Size: SH
  8. Remove the headlamp retainers by pulling up and outward.

  9. Object Number: 293653  Size: SH
  10. Disconnect the electrical connections and bulb(s) from the headlamp housing.

  11. Object Number: 364362  Size: SH
  12. Remove the headlamp mounting bracket retainers.
  13. Remove the headlamp mounting bracket from the headlamp housing.
  14. On a bench, remove the arc tube with starter from the headlamp housing. Refer to High Intensity Discharge Headlamp Starter/Arc Tube Replacement .

Installation Procedure

  1. On a bench, assemble the arc tube with starter to the headlamp. Refer to High Intensity Discharge Headlamp Starter/Arc Tube Replacement .
  2. Install the headlamp mounting bracket to the headlamp housing.

  3. Object Number: 364362  Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Install the headlamp mounting bracket retainers.
  5. Tighten

        • Tighten the headlamp mounting bracket flange nut to 5 N·m (45 lb in).
        • Tighten the headlamp mounting bracket bolts to 1.24 N·m (11 lb in).

    Object Number: 293653  Size: SH
  6. Connect the electrical connections and bulb(s) to the headlamp housing.

  7. Object Number: 364275  Size: SH

    Important: Ensure that the lower retaining tabs are seated for proper headlamp housing retention.

  8. Install the headlamp to the vehicle.

  9. Object Number: 293650  Size: SH
  10. Install the headlamp retainers by pushing down and inward.
  11. Install the starter cable retainers to the headlamp ballast.

  12. Object Number: 364376  Size: SH
  13. Install the starter cable to the headlamp ballast.
  14. Tighten
    Tighten the starter cable screws to 0.7 N·m (6 lb in).

  15. Install the front bumper assembly to the vehicle. Refer to Front Bumper Impact Bar Replacement in Bumpers.
  16. Install the radiator grille to the vehicle. Refer to Grille Replacement in Exterior Trim.
  17. Install the battery negative cable.