I have a 99 Tahoe, 2 door, gas Vortec. I have fuel up to the regulator but nothing getting to the throttle body, only code I could get was TPS. Would this not let the engine start? I could put gas in the throttle body and could get it to fire so I have spark. Only others error codes was by checking the blinking service engine soon light and they were 2 and 6 flashes. Any help is appreciated and thanks for any help.