WARNING: This page is about a different car, the 2003 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Automatic Lamp Control Inoperative Diagnostic Specifications (1 Of 2)
Courtesy of GENERAL MOTORS CORP.
Fig 2: Automatic Lamp Control Inoperative Diagnostic Specifications (2 Of 2)