Q&A

i have replaced trans,flt wheel,fuel pump n filter,starter, alternator,fuel inj-hoses (spider),radiator,water pump,2-freeze plugs,2- bushings,ign-module,spark plugs n wires n filters... truck runs great in drive way but when i drive n temp reaches normal level it starts bogging n when i give it more gas it turns off n will not start for 4 to 5 hrs , sometimes it will start right up n sometimes i need to get a jump . I have taken it to 2 mach shops n 1 back yard mach n the Chev dealer they ran diag on it said it was ign-mod replaced it n it still doing the same ...does any one know what it could be ???????????????