WARNING: This page is about a different car, the 2002 Buick Regal and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Rear Compartment Lid Ajar Switch Connector End View
Courtesy of GENERAL MOTORS CORP.
Fig 2: Identifying Rear Compartment Lid Lock Release Actuator Connector End View
Courtesy of GENERAL MOTORS CORP.
Fig 3: Identifying Rear Compartment Lid Release Relay Connector End View
Courtesy of GENERAL MOTORS CORP.
Fig 4: Identifying Rear Compartment Lid Release Switch Connector End View
Courtesy of GENERAL MOTORS CORP.
Fig 5: Identifying Rear Compartment Occupant Sensor Connector End View