WARNING: This page is about a different car, the 2009 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: TCM Power, Grounds, ECM, IPM
Courtesy of GENERAL MOTORS CORP.
Fig 2: ECM, EBCM
Courtesy of GENERAL MOTORS CORP.
Fig 3: Automatic Transmission Shift Lever Assembly, IPM