6-Speed Automatic (DISC) No longer available as standard equipment as of January 16, 2019.
8-Speed TorqueFlite Automatic (DFD)
8-Speed TorqueFlite Automatic (DFL)
8-Speed TorqueFlite Auto
6-Speed Automatic
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
Transmission, 8-speed automatic, electronically controlled with overdrive and tow/haul mode. Includes Cruise Grade Braking and Powertrain Grade Braking
Transmission, 8-speed automatic, electronically controlled with overdrive and tow/haul mode. Includes Cruise Grade Braking and Powertrain Grade Braking (Included and only available with (L84) 5.3L EcoTec3 V8 engine.)
Cooling, auxiliary external transmission oil cooler (Not available with (LM2) Duramax 3.0L Turbo-Diesel I6 engine.)