Hello
I have a 2006 Chevy Kodiak 5500, with 6.6 Duramax. It will start up and run fine for exactly 39 seconds then shuts down, then restarts immediately and will do same thing again.
We have replaced all injectors, glow plugs and injector pump, fuel filters. Still does the same thing, 39 seconds every time. Any advice is greatly appreciated.

thanks,
Rich

 

sounds like anti theft...scott

 

it definitely sounds something related to the ecm programming or anti theft it is lasts only 39 seconds every time. do you have any active codes or inactive codes?