WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Torque Convertor Clutch (TCC) Control Switch Schematics
Courtesy of GENERAL MOTORS CORP.
Fig 2: Transmission Valve Controls Schematics
Courtesy of GENERAL MOTORS CORP.
Fig 3: Automatic Transmission Fluid Pressure (TFP) Manual Valve Position Switch And Pressure Control Solenoid (PC SOL) Valve Schematics