Ok, so earlier tonight I went to Wal Mart, got some stuff then came home and parked my truck; nothing out of the ordinary. I cut out the hole in the rear bumperto installthe hitch ball I got and then went to move my truck to the other side of the parking lot and it won't start at all. It tells me that I need to service my air bag and my TPMS. I havent touched ANYTHING since I got the truck. Im thinking it's the starter or maybe the spark plugs because all my lights come on and my windows still work, but the engine isn't even trying to turn over. I really need to get this fixed by monday, so quick answers would be much appreciated. Thanks for any ideas.