6-speed automatic transmission w/OD
HD trailer tow pkg -inc: class IV hitch receiver, wiring harness w/4-pin & 7-pin connector, HD aux transmission oil cooler, HD radiator, electronic braking wiring kit, trailer sway control
6-speed automatic transmission w/OD -inc: tow/haul mode selector
Brake/transmission shift interlock
Electronic variable 4-speed automatic transmission
Combination transmission/electronic cooler
HD air-to-oil aux transmission oil cooler