Ok so im about yo drop my tranny to get the converter out.

I have a 2003 3.0 april build date.

the converter has this stamped on it: Metal Stamp - 2421 5581 (on Cover) (part 4249 at Torque Converters - Precision of New Hampton $232 plus shipping (35lbs so about $30 one way and they ship back i believe)


My tranny has these on the label: GM 75 0 or 8 then 603
in large print 3GXU
P31 - - 086 5894

the green label on the pan says use: 8322 0024 359.

Real oem says i have a GM 5L40E (A5S 390R - XU)

now im confused are the trannys the same or do i have a different tranny.

and which oil is now being considered best to use....I looked at many threads but most say ZF tranny and i have a GM....more reading i guess. if anyone has input feel free to add...