2013 Chevrolet Express 1500 Passenger Owner Manual - Page 219

Driving and Operating 9-29 Tow/Haul Mode Turn the Tow/Haul Mode on and off by pressing the button on the instrument panel. When Tow/Haul is on, a light on the instrument cluster will come on. See Tow/Haul Mode Light on page 5‑21 for more information. Also see "Tow/Haul Mode" under Towing Equipment on page 9‑54. To disable or enable Tow/Haul Grade Braking within the current ignition key cycle, press and hold the Tow/Haul button for three seconds. A DIC message will be displayed. See Transmission Messages on page 5‑37. See Towing Equipment on page 9‑54. For other forms of grade braking, see Automatic Transmission (Six Speed) on page 9‑22 or Automatic Transmission (Four Speed) on page 9‑26 and Cruise Control on page 9‑34. Tow/Haul Mode Grade Braking (6-Speed Automatic Transmission) Vehicles with an automatic transmission have a Tow/Haul Mode. The Tow/Haul Mode adjusts the transmission shift pattern to reduce shift cycling, providing increased performance, vehicle control, and transmission cooling when towing or hauling heavy loads. Tow/Haul Mode Grade Braking is only enabled while the Tow/Haul Mode is selected and the vehicle is not in the Range Selection Mode. See "Tow/Haul Mode" listed previously and Manual Mode on page 9‑28. Tow/Haul Mode Grade Braking assists in maintaining desired vehicle speeds when driving on downhill grades by using the engine and transmission to slow the vehicle.