1998 Chevy Tahoe intermittent failure of fuel meter assy

I have a code as imtermittent failure of fuel meter assy--that was removed but the problem is with the injector unit, does this mean I need all 6 injectors or is there one that would be out and that could be the problem. When I try to start it will crank and that is it, we replaced fuel pump 2 times as that is what it was acting like when it wouldn't turn over. It has never quit and not started again at all, always if we let it set for awhile it will start again. ;Had this problem everytime I broke down and towed to shop it would always start for them.