HD 6-speed automatic transmission w/OD-inc: tow/haul mode, driver shift control, manual shift mode
Auxiliary external HD air-to-oil transmission oil cooler
Brake/transmission shift interlock
6-speed automatic transmission w/OD
Class III/IV trailer tow pkg-inc: 4/7-pin connector, HD flasher, 2" HD hitch receiver, brake module wiring, HD transmission cooler