Hey guys new to the site. Ok yesterday my dad was driving the truck. He stopped for lunch. He got back in the truck went to start it and nothing. He popped the hood and removed the positive battery terminal cleaned it and it didn't help. He tapped on the fuses and it started clicking. After about 20 or 30 minutes he tried to start the truck and it fired right up. And ever since it has had a Service Engine light on. We took the truck to O'Reillys and 11 codes popped up all dealing with the ECM and PCM. We have no clue what they all meant or the numbers for them and for that I am sorry. I really don't know where to start even looking at to actually diagnose the problem. The truck is a 2011 with less than 50,000 miles on it. Any help with this would be great. Also the truck runs fine with this light on no noticeable power loss or anything like that.