Navigator 4WD V8-5.4L VIN 5 (2006)
4. Remove the transmission fluid cooler tube retainer from the front of the engine.
5. Using the special tool, disconnect the fluid cooler tube from the auxiliary transmission fluid cooler.
6. Using the special tool, disconnect the fluid cooler tube from the auxiliary transmission fluid cooler.
7. Remove the secondary latch from the upper transmission fluid cooler tube at the radiator.