How do you reset your ECM computer on a 94 fleetwood?

To reset the ECM (Engine Control Module) on a 1994 Cadillac Fleetwood, you can disconnect the negative battery terminal for about 10-15 minutes. This will clear the stored trouble codes and reset the ECM. After reconnecting the battery, you may need to cycle the ignition a few times before starting the vehicle to allow the system to recalibrate. Always ensure that any stored diagnostic trouble codes are noted before resetting, as they can help identify underlying issues.