WARNING: This page is about a different car, the 1995 Oldsmobile Ninety-Eight and 1995 Buick Park Avenue. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: 3.8L (VIN K & 1) PCM Wiring Diagram (1 Of 3)
Fig 2: 3.8L (VIN K & 1) PCM Wiring Diagram (2 Of 3)
Fig 3: 3.8L (VIN K & 1) PCM Wiring Diagram (3 Of 3)