Clearing Trouble Codes: Notes
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.
NOTE:
If PCM codes are cleared, all snapshot code data will be cleared. See PCM CODE & INSTANT SNAPSHOT under DIAGNOSTIC TESTING. Also see EXITING DIAGNOSTICS under SELF-DIAGNOSTIC SYSTEM.