On the 6.0L applications, you got AC Condensor, Engine Oil Cooler (driver side radiator plenium) Trans Cooler, and a Power Steering Cooler.

5.3L applications and 4.8L wont have the Engine Oil Cooler lines, and may or may not have a Power Steering Cooler.

 

back to cleaning the radiator though, you can use a tooth brush or one of those tough bristled small brushes people use to get grease from under their nails. thats works and doesnt mess the fins

 

Not quite, you cant distinquish the AC Condensor vs. the radiator as they both have the same dimensions, with exception to the thickness. Take note of the fin density from the view in the front from the view in the back, you'd be surprised

The small rectangular cooler, mounted on the drivers side is for your power steering. Heh i know, my cooler lines are starting to leak

The square one, mounted center is the Trans cooler, adding additional cooling from the passenger side radiator plenium.