WARNING: This page is about a different car, the 2003 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Power Sunroof Operates Erratically Diagnostics Tests (Steps 1 To 4)
Courtesy of GENERAL MOTORS CORP.
Fig 2: Power Sunroof Operates Erratically Diagnostics Tests (Steps 5 To 13)