Electronic 6-Speed Automatic -inc: tow/haul and sport mode
Electronic 10-Speed Automatic -inc: tow/haul and sport mode and SelectShift w/progressive range select
Electronic 10-Speed Automatic -inc: tow/haul and sport mode
Transmission, 6-speed automatic, electronically controlled with overdrive and tow/haul mode. Includes Cruise Grade Braking and Powertrain Grade Braking
Cooling, auxiliary external transmission oil cooler (Included and only available with (L83) 5.3L EcoTec3 V8 engine.)