Engine/Transmission (1998.5 - 2002) ? on Part

[TY584]

Last night on my way home i got a air leak in the front. There are two smaller radiators in front of the main one. One is larger and one smaller. This is the larger one. Is this my trans cooler or air conditioner? Just air came out. No fluid. It looks like a small rock may have poked a hole in it.

Thanks in advance

1999 3/4 ton 4x4

 

[PC12Driver]

On the passenger side of the truck? That's the AC. And that's freon, not air.