Hello Based on what you said, It sure points to you starter solenoid on top of your starter or just a worn starter motor Or the start lock relay but I doubt that. Or your engine is frozen! No I think we will go with the starter. LOL You said 6 years on the starter. I don't think you can get behind the starter through an access panel to check it i believe you have to remove some of the plenum tubes and throttle body to get to the starter. If someone know different I would like to know.