Originally Posted by plainmek
Check engine light came on but no stored messages truck is running fine all Ok(3.0 liter diesel) anybody have any ideas
Is the light blinking or solid?
If solid, it MAY go away after a few normal start/run cycles. If it is still on check codes and use your warranty.
If blinking, take it for service right away.
If you can find a cheap scanner with reset, hook it up for a bit more information than an idiot light can give.