So I bought my 99 Jimmy and the previous owner swapped the engine for an 04 I believe he said but my issue lies in the fact that every picture I can find shows an EGR part stuck right up front. Mine had the part hanging off to the side unattached to anything but the wires over by the CPU and coolant reservoir. And no where to install it. Watched videos of the delete people have done with a cover plate and learned my engine doesn't even have that spot for the part to go. I've since removed it out of my engine bay. Still runs alright since outside of the other systems in the truck I'm working on. If there are other threads on this or anyone with a clue to some insight on what the difference is between EGR and EGR free engines in these types of vehicles I would be thankful.