TorqShift-G 6-Speed Auto w/OD -inc: (6R100), SelectShift and tow/haul mode
TorqShift 6-Speed Automatic -inc: (6R140), SelectShift and tow/haul mode
Transmission, 6-speed automatic, heavy-duty electronically controlled with overdrive and tow/haul mode. Includes Cruise Grade Braking and Powertrain Grade Braking (Requires (L96) Vortec 6.0L V8 SFI engine or (LC8) 6.0L V8 SFI Gaseous CNG/LPG capable engine.)
Cooling, auxiliary external transmission oil cooler