WARNING: This page is about a different car, the 1995 Cadillac Seville, 1995 Cadillac Eldorado, and 1995 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Automatic A/C-Heater System Wiring Diagram (1 Of 2)
Fig 2: Automatic A/C-Heater System Wiring Diagram (2 Of 2)