My check engine light comes on sometimes about 30 miles after I fill up. It has done it twice the first time it went off when I refilled with different desiel and the second time it went off the next mourning after I run 3/4 of a tank out. The truck runs fine but the mpg drop a little. I kinda think it is bad desiel what do yall think

 

Do the 07's have a separate water in fuel light? If not maybe try flushing?

 

you have an 07!!

call the dealer!!!

use the warranty bk3500!

 

I'd recommend taking it to the dealer to at least get the latest PCM software version. I had a CEL (my one and only). Took it in and they replaced the turbo!