Hid Headlamp Starter/Arc Tube Replacement

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. 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.

NOTE: 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.

CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.

1. Disconnect the battery negative cable.
2. Remove the headlamp.
3. Remove the arc tube with starter retaining screws from the headlamp housing.
4. Remove the arc tube with starter from the headlamp housing.
5. Remove and retain the spiral Electromagnetic Interference (EMI) shield from the headlamp housing.

INSTALLATION PROCEDURE



1. Install the spiral electromagnetic interference (EMI) shield to the headlamp housing.

IMPORTANT: The headlamp starter must be held perfectly straight to the headlamp housing, apply pressure downward to compress the spiral electromagnetic interference shield with the headlamp starter as the three screws are replaced. The headlamp starter and arc tube assembly also has a tendency to tilt to one side because of the spiral electromagnetic interference shield.

2. Install the headlamp starter assembly to the headlamp. Ensure that the alignment notch (1) and tab (2) are lined up.





NOTE: The correct tightening sequence must be followed. If the correct sequence is not followed, the headlamp components may warp and cause premature failure of the system.

IMPORTANT: Follow the correct tightening sequence. Use GM P/N 12346067 or Loctite 380/410 on these fasteners or in the headlamp housing screw holes.

3. Install the starter/arc tube retaining screws to the headlamp housing.

Tighten
3.1. Tighten the starter/arc tube screws to 0.5 N.m (4.5 lb in) on the first pass.
3.2. Tighten the starter/arc tube screws to 1 N.m (9 lb in) on the second pass.

IMPORTANT: The starter cable routing from the starter/arc tube to the ballast is between the headlamp mounting bracket and the back of the headlamp housing. The starter cable must be routed between the vertical adjuster and the center pivot in order to provide proper clearance.

4. Install the headlamp to the vehicle.
5. Connect the battery negative cable.