High Intensity Discharge Headlamp Replacement

WARNING: This page is about a different car, the 2011 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying High Intensity Discharge (HID) Headlamp & Components

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
WARNING: 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. WARNING: 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. Preliminary Procedure Remove the front bumper fascia. Refer to Front Bumper Fascia Replacement . Remove the wheelhouse liner in order to access the rear headlamp assembly nut.
1	Headlamp Assembly Bolt (Qty: 3) CAUTION: Refer to Fastener Caution . TIP: Tighten the fasteners in sequence as shown. Tighten 6 N.m (53 lb in)
2	Headlamp Assembly Nut Tighten 6 N.m (53 lb in)
3	Headlamp Capsule Assembly TIP: Pull outward on the housing in order to disconnect the electrical connection at the lower rear edge of the lamp.
4	Electrical Harness Connector TIP: Disconnect the connector from the headlamp capsule assembly.