HomeAll RepliesReply To: 1999 Century Trunk Lid actuator Reply To: 1999 Century Trunk Lid actuator Sponsored August 31, 2023 at 6:38 pm #777421 Parts Man1Participant I believe its so you can manual open the truck lid Sponsored Subscribe to GM Authority For around-the-clock GM news coverage We'll send you one email per day with the latest GM news. It's totally free. First Name Last Name Email Address Subscribe via Email Leave this field empty if you're human: Sponsored