Since it is front wheel drive, there isn't one that you can change.
There is no servicable transmission filter on the Sedona.
In transmission
The 2006 Kia Sedona does not have a replaceable transmission filter. So you only have to replace fluid, never the filter.
It is inside the transmission case. According to Kia, the filter is only replaced during overhaul of the transmission. You have to separate the case halves to replace the filter. This trans has no lower pan.
The 2007 Kia Sedona has a 5-speed shiftable automatic.
You don't, it doesn't have one
The transmission filter is located in the bottom of the transmission under the oil pan. You have to drop the oil pan to access it but the filter should come with a new gasket.
2007-10 Kia Sedona, 2010-14 Kia Sedona EX or LX.2007-8 Hyundai Entourage.
From my research, 2003 and before has a spin on filter under the hood and a non serviceable filter inside the transmission. 2004 and up, has just the internal filter. The internal filter requires transmission removal and disassembly to access.
the transmission filter is in the tranny. you have to drop the tranny pan to get to it.
Mounted inside the transmission.
I think you have to drop the pan,just have a new gasket handy if you do.