So. I just bought this used today. Put on about 45 miles, a few stops, and the check engine light comes on. Checked and have 5 codes: P0325, P0330, P0340, P0344 & P0627. Drove home and almost got there and the truck shut off and wouldn't restart. A couple red lightning bolts showed up to the right of the check engine light. Walked home then came back with a 10mm wrench to disconnect the battery, but tried starting it first and it stated. Drove it the rest of the way home. Knock sensors, Cam sensors and Fuel Pump "A" sensor control circuit open. Help?!

 

PCM. Replace and reflash. Test the individual sensors each one. It is what it is. They knew it.

 

Ended up being the aftermarket alarm system installed interfering with the vehicle. Someone unplugged it cuz they couldn't find the fob. Cam sensor was bad but not the knock sensors or the fuel pump. They took care of it for me.