Removal Procedure

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.

Open the rear compartment lid.
Remove the compartment trim panels. Refer to COMPARTMENT TRIM PANEL REPLACEMENT--REAR . Disconnect the tail lamp harness connector (1).
Remove the tail lamp fasteners.
Remove the tail lamp assembly (3) from the vehicle.
While supporting the tail lamp assembly (3), remove the tail lamp harness grommet (2).

Fig 1: Removing Tail Lamp
Courtesy of GENERAL MOTORS CORP.