My 99 OBS Escalade runs great, was really treated good by the old couple that I bought it from a year and half ago. I've done a LOT of minor things to get it to where I'm really comfortable with its reliability (plugs, cleaned filthy egr and tb, nickel slip yoke, every fluid swapped, etc). I read of a lot of people having problems with the fuel injection system. Is there anything I can be doing to prevent problems down the road, or will it just happen?