For 1990-2009 cars

### Removal Procedure

1. Remove the interior courtesy lampretaining tabs (1). Refer to Interior Courtesy Lamp Replacement.
2. Disconnect the electrical connector (2).
3. Remove the screws (1) and the Onstar button cover (3) from the interior courtesy lamp.

### Installation Procedure

Caution: Refer to Fastener Caution in the Preface section.

1. Install the Onstar button cover (3) and the screws (1) to the interior courtesy lamp and tighten to 2.5 N·m (22 lb in).
2. Connect the electrical connector (2).
3. Install the interior courtesy lamp (1). Refer to Interior Courtesy Lamp Replacement.