i own a 98 2 door Tahoe with the 6.5 liter diesel motor. i replaced the entire fuel system except the injectors and injector pump. it runs when it wants to basically when it does occasionally start it will run for a minute or 2 then stall, then sometimes it will start right back up again after trying or it wont and when it does sometimes it will stall again or it will run fine. or it will start without a glitch and never stall, or it wont start at all. has anyone every heard of this problem before or know of a solution thanks.