Exiting Diagnostics
WARNING: This page is about a different car, the 1992 Cadillac Fleetwood and 1992 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.
To exit diagnostic mode, depress AUTO button or turn ignition switch off for 10 seconds. Temperature setting will reappear in display panel. Trouble codes are not erased when this is done.