Yeah It's possible that your starter is going bad if your truck keeps cranking after you turn it off. You should have it checked by a mechanic to diagnose and address the issue.
i have an issue where sometimes when i go to crank my car i lose all power. I disconnect and reconnect my battery and then it cranks right up. (brand new battery) There have also been a few times now where my car wont turn over on the first try and then i will try again and it will crank. Any ideas what this might relate to?
I think your car might be having electrical problem. I recommend you get a professional mechanic inspect your vehicle to diagnose and fix the issue. It could be related to a faulty connection, a starter motor problem, or some other electrical issue that they can identify and address.