Power Transfer Unit
The power transfer unit (PTU) is a gearbox that attaches to the transmission. The PTU directs power to the rear driveshaft and the Rear Drive Unit (RDU). For more information on the PTU, Refer to: Power Transfer Unit - 6-Speed Automatic Transmission - 6F35 . REFER to: Power Transfer Unit - 6-Speed Automatic Transmission - 6F50/6F55 .