my service engine light came on,the truck has
been feeling like its running out of gas ,only when you have the pedal in a steady position , idling is fine and normal driving is fine.
i did the odometer reading thing and got a

dt 3ef5 is that a code?

 

Get a scan tool and post the code. It goes in the OBD2 port underneath the steering column.

 

Id invest in that hand held Diablo Helion scan tool, works great and works on allmost every type of car and truck out there. I think theyre around 250.00 and worth every penny..

 

No.