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It's on top of the valve body if I remember the schematic correctly...
in the oil pan or outside ? i cant find any pictures of where its located
No, that started later.Does your truck have the cooler bypass valve? I can’t recall off the top of my head if an 09 will have it, but some have a cooler bypass. Basically looks like a small metal block that the cooler lines go into as they come out of the transmission.