Hi, 99 Tahoe 2wd. I had the gearbox changed a while back by a local mom-and-pop shop. After picking the truck back up, I immediately noticed how hard it was to steer the truck. The mechanic told me "oh, your power steering pump is also going out...." WELL... a week later, I had the pump changed and steering is still hard... I've recently found out that my truck as EVO steering, which I don't think the pump I replaced it with had the electronics for the EVO (i was mislead on this too). Needless to say, it is still hard to turn.. Any advice?