Ok I am sure I am not in the right place but I need help.. The other day I had a code come up 2509, I checked it out an it said PCM code well my buddy though it may be the batteris, the next mornning the truck was dead so I changed them an the code was still there, I took the truck to my buddy who has a code reader an it said the same thing but the funny thing is we did'nt clear the code it went away... So here's my question what's going on should I have the dealer check it out or what its an 07 5.9 nothing else has ever been wrong with this truck an its got 104,000 I have had it sence day 1 with only 28 miles on it.

 

I would have cleared the code & waited to see if it cane back.. Since you didn't clear it come back