Electronic 6-Speed Automatic w/OD -inc: Super Electronically Controlled Transmission (Super ECT), lock up torque converter, transmission cooler, automatic transmission fluid warmer and sequential shift mode
Transmission, 6-speed automatic, electronically controlled with overdrive, tow/haul mode and tap up/tap down shifting
Cooling, auxiliary external transmission oil cooler, heavy-duty air-to-oil
Transmission, 8-speed automatic electronically controlled with overdrive, tow/haul mode and tap up/tap down shifting