well i guess it was coming but at the 320,334 mile mar my 02 duramax finally had something break ( besides having to replace the injectors 4 times now which is not cheap). but i went to drive it to work and it wouldnt start then i put the charger on it and it fired up for a couple minutes, went to put it in reverse and it goes no where. feels like it doesnt engage into reverse at all. i cant be mad though i would say i got my moneys worth.