Just wanting to know if this has happened to anyone else. Today while waiting for y kid to get out of school, I was parked but car was still running, I popped open the trunk and my DIC said "truck ajar" and then said "check gas cap" and then back to trunk then back to gas cap. I filled my car up 4 days ago and have less than 1/2 tank of gas. I thought it was weird so when I got home, I tried to recreated message but could not. No check engine light came on. It just acted normal.