WARNING: This page is about a different car, the 2003 Buick Regal and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Door Ajar Indicator Malfunction Diagnostic Procedure (Steps 1-8)
Courtesy of GENERAL MOTORS CORP.
Fig 2: Door Ajar Indicator Malfunction Diagnostic Procedure (Steps 9-19)
Courtesy of GENERAL MOTORS CORP.
Fig 3: Door Ajar Indicator Malfunction Diagnostic Procedure (Steps 20-27)