8-speed automatic transmission

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