6-speed automatic transmission

This smooth-shifting electronically controlled transmission with overdrive includes:

Tow/Haul mode

  • Raises transmission upshift points to provide more power to accelerate with a trailer or heavy load
  • Raises downshift points to use engine compression to help slow the truck instead of merely braking

Powertrain Grade Braking

  • Automatically uses the engine and transmission to slow the truck to maintain desired speeds when driving downhill
  • Reduces brake wear and increases vehicle control

Cruise Grade Braking

  • Downshifts automatically to slow the truck as it drives downhill if it exceeds the cruise set speed by a certain amount