Connector Identification
WARNING: This page is about a different car, the 2002 Buick Regal, 2002 Buick Century, 2001 Buick Regal, and 2001 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
Fig 16: Identifying Transmission Fluid Pressure Manual Valve Position Switch Connector Terminals (Harness Side)