i have this 99 vortec in my jeep and it runs but not well. i have narrowed it down to the injectors for cyl. 1 and 8 are not firing/spraying. i have determined that the injector drivers are not working in the computer (it's new because i went with a 97 computer that did away with advance evap and vats systems). i have voltage to the injectors but the injector drivers in the vcm are not grounding the signals to those two injectors. my question is can i have this fixed on this computer or is it bad? i plan a trip in a week and a half and i'm not ready!!!! help!!!! evrything else seems to be working fine. it actually idles fairly smooth to only be running on 6 cylinders. anyway any help is appreciated.