6-speed automatic transmission -inc: select shift, tow/haul mode, large plastic urea tank & gauge, exhaust brake (REQ: 99T Engine)
TorqShift 5-speed automatic transmission w/OD -inc: tow/haul mode (REQ: 99Y Engine)
6-speed automatic transmission w/OD
HD transmission oil cooler
6-speed automatic transmission w/OD (N/A w/LMM Engine)
6-speed automatic transmission w/OD -inc: HD oil cooler (REQ: LY6 Engine)
6-speed automatic transmission w/OD -inc: HD oil cooler