Transmission, 6-speed, electric automatic -inc: overdrive and tow/haul mode, driver shift control, manual shift mode
Cooler, auxiliary, external transmission oil cooler, heavy duty air-to-oil
Transmission, 4-speed automatic, electronic variable automatic
HD 6-speed automatic transmission -inc: tow/haul mode, driver shift control, manual shift control
Aux external HD air-to-oil transmission oil cooler