OK, after 67,000+ error-free miles, hop in the Trac this am after it sat for about 6 days. Turn the key, starts fine and immediately two of the doors lock?? A clicking sound comes from under the dash. Noticed no tach operation, then all tach works and all is well. Pulled out to find the tripodometer had reset to 0. Nothing else reset or inop. No codes and ran fine all day. Got any clues for this and was it just a fluke or will I see this again?